toasters

toasters@lists.teaparty.net

2 participants
13517 discussions

replicating exchagne databse
by SKIP HOFMANN 21 Oct '04

21 Oct '04

Hi all We have our exchange DB on a FAS 250. We take 3 snapshots of the logs and DB everyday. I want to know if I can replicate the most recent snapshot of the DB and logs to my R200, and if a disaster were to hit could I copy this DB back to the FAS 250 and mount it? We use single mailbox recover version 2.11 to restore emails and inboxes. If point this product to the replicated exchange DB on the R200 It does work the product does read the DB and I can recover inboxes and emails. So I guess my question is a snapshot of a DB once moved off of a fAS250 to an R200 can it be remounted by snap manger for exchange once the DB is copied back to the FAS? Thanks Skip Hofmann Senior Network Administrator TetraTech Skip.Hofmann(a)ttisg.com <mailto:Skip.Hofmann@ttisg.com> 949 500 5286 cell 949 608 5801 office

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Exchange databse on a FAS 250
by exadmin 21 Oct '04

21 Oct '04

Hi all I am trying to make an argumetn for putting our exchange database (50 gigs) on a filer instead of a windows 2000 box with raid 5 array. We are running Exchange 5.5 Other than the snpshot technology what other benefits will we get with using a filer VS a windows box thanks a bunch This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail.

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RE: Exchange databse on a FAS 250
by Hill, Aaron 19 Oct '04

19 Oct '04

If the sole purpose for purchasing the filer is for this 50gig exchange database, it is probably not easy to make a good business case. However, if the filer is part of a larger storage strategy for your organization, it should be much easier to build a convincing business case. I think that the real benefits of NAS/SAN come from the ability to consolidate individual server storage and centrally manage. Other benefits include reliability, strong product support (at least with NetApp) and a proven track-record etc <insert marketing jargon here> For example; If you already connect Windows CIFS (or any other protocol for that matter) on the FAS250 then you may have already proven that the FAS250 works in your environment and that it provided some consolidation/management benefits. You should be able to show that the system is reliable and the performance has met expectations (otherwise you wouldn't be considering it for an exchange DB). If you have used NetApp support, chances are that you had a good experience. Moving more storage services to the FAS250 over time is what this entry-level device was designed for .... expansion, future-proofing, or whatever you want to call it. This is because it can fairly easily become a disk shelf in a larger F9XX series system if you choose to expand to an enterprise or high-availability (aka clustered/mirrored) storage solution. If you do expand, you should be able to do so without significantly increasing the amount of time spent managing the filer(s). Whereas adding a separate RAID array for every server/service could lead to considerably more time spent setting up and maintaining. On the surface, less moving parts (aka RAID controllers, servers, vendors) results in a simpler environment. Hope this helps seed some ideas for you. Aaron -----Original Message----- From: Derek Lai [mailto:Derek.Lai@onyxco.com] Sent: Tuesday, 19 October 2004 6:22 AM To: 'exadmin'; toasters(a)mathworks.com Subject: RE: Exchange databse on a FAS 250 You can create a iSCSI lun that is 50GB for now. When it fills up, you can grow it on the fly. You can instantaneously restore using SnapShot. You can also snapmirror it elsewhere for Disaster Recovery. If you get the Single Mailbox Restore option you can restore any single message from any mailbox in any snapshot. Derek -----Original Message----- From: exadmin [mailto:exadmin@insuranceskillscenter.com] Sent: Monday, October 18, 2004 10:29 AM To: toasters(a)mathworks.com Subject: Exchange databse on a FAS 250 Hi all I am trying to make an argumetn for putting our exchange database (50 gigs) on a filer instead of a windows 2000 box with raid 5 array. We are running Exchange 5.5 Other than the snpshot technology what other benefits will we get with using a filer VS a windows box thanks a bunch This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. ************** IMPORTANT MESSAGE ************** This e-mail message is intended only for the addressee(s) and contains information which may be confidential. If you are not the intended recipient please advise the sender by return email, do not use or disclose the contents, and delete the message and any attachments from your system. Unless specifically indicated, this email does not constitute formal advice or commitment by the sender or the Commonwealth Bank of Australia (ABN 48 123 123 124) or its subsidiaries. We can be contacted through our web site: commbank.com.au. If you no longer wish to receive commercial electronic messages from us, please reply to this e-mail by typing Unsubscribe in the subject line. ***************************************************************

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request sysconfig -A ouput with 146 GB drives.
by Tavis Gustafson 18 Oct '04

18 Oct '04

I am looking for a sysconfig -A output on a system with X236_SCHT6146F10 drives. I am specifically looking for the Phys (MB/blks) values. thanks. -Tavis em with X236_SCHT6146F10 drives. I am specifically looking for the Phys (MB/blks) values. thanks. -Tavis

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RE: Downrev from 6.5.1R1 to 6.4.5
by Derek Lai 18 Oct '04

18 Oct '04

Can you post any response directly to you that does not copy the alias? I'd be very interested in knowing the answer. Derek -----Original Message----- From: Paul Letta [mailto:letta@jlab.org] Sent: Monday, October 18, 2004 10:12 AM To: toasters(a)mathworks.com Subject: Downrev from 6.5.1R1 to 6.4.5 We have had some serious problems with NDMP restores since we went to 6.5. I have been unable to get either NetApp or my backup software company (Oracle - Reliaty Backup) to take it seriously. They both blame the hardware - even though I show the failure with 3 separate tape drives on 3 separate filers and multiple tape images, that all worked at pre-6.5. So to make the story short - I want to down rev one my filers from 6.5.1R1 to 6.4.5. Once I at 6.4.5, and the restores start to work again - I hope to get some more help out of either of NetApp and/or Oracle. I have not went with DP on any of the raid groups, so that will not be an issue. But I am a bit concerned about how long it will take. The filer is a FAS940, it has about 1.2TB of space and about 34 million files. Can anyone give me a hint to how long the revert will take ? Thanks, Paul -- Paul Letta Thomas Jefferson National Accelerator Facility Computer Center Unix System Administrator EMail: letta(a)jlab.org Phone: (757)269-5106

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RE: Exchange databse on a FAS 250
by Derek Lai 18 Oct '04

18 Oct '04

You can create a iSCSI lun that is 50GB for now. When it fills up, you can grow it on the fly. You can instantaneously restore using SnapShot. You can also snapmirror it elsewhere for Disaster Recovery. If you get the Single Mailbox Restore option you can restore any single message from any mailbox in any snapshot. Derek -----Original Message----- From: exadmin [mailto:exadmin@insuranceskillscenter.com] Sent: Monday, October 18, 2004 10:29 AM To: toasters(a)mathworks.com Subject: Exchange databse on a FAS 250 Hi all I am trying to make an argumetn for putting our exchange database (50 gigs) on a filer instead of a windows 2000 box with raid 5 array. We are running Exchange 5.5 Other than the snpshot technology what other benefits will we get with using a filer VS a windows box thanks a bunch This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail.

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"Cannot connect to server" Error?
by Nicholas Chuah 18 Oct '04

18 Oct '04

The below appeared in the log, could not fund any reference in the NOW site, any hint would be greatly appreciated. Sat Oct 9 13:58:47 SGT [Auth04:warning]: Cannot connect to server. Socket connect error: Resource temporarily unavailable Sat Oct 9 13:59:23 SGT [Auth05:warning]: Cannot connect to server. Session setup error: Called name not present (0x82) Rgds. Nic __________________________________ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail

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RE: Troubles with DATAPROTECTOR's HP backup software.
by Derek Lai 18 Oct '04

18 Oct '04

Any reason why you are on 5.0 as opposed to Data Protector 5.1? Data Protector 5.1 is the latest and has been out for a while. I've seen something like this when I first upgraded to Data Protector 5.1 and was trying to use NDMP backup. If I try to backup more than 1 object, it will finish the first object and then timeout. Go to /etc/opt/omni/datalists and look at the backup specification you have. Edit the file and remove the line "DYNAMIC 1 1". After that, the backup worked fine for me. Derek -----Original Message----- From: Frank Bonnet [mailto:f.bonnet@esiee.fr] Sent: Monday, October 18, 2004 3:58 AM To: toasters(a)mathworks.com Subject: Troubles with DATAPROTECTOR's HP backup software. Hi Since several weeks we are in trouble to make HP DATA PROTECTOR 5.0 working with our F87, the filer is connected to a HP DLT 8000 thru the fastscsi bus It seems the filer do not send the end of session or something like that then the backup software wait forever for such signal. The ndmp session never terminate and is "seen" active and the backup snapshot is not deleted. Anyone has some info ? The filer is running 6.5.2R1 but the problem was the same with previous versions. Thanks a lot. see below error message [Normal] From: BMA-NDMP(a)obelix.esiee.fr "yfiler dev" Time: 10/17/04 16:14:10 DUMP: DUMP IS DONE [Normal] From: BMA-NDMP(a)obelix.esiee.fr "yfiler dev" Time: 10/17/04 16:14:10 DUMP: Deleting "/vol/vol0/../snapshot_for_backup.1" snapshot. [Major] From: BSM(a)obelix.esiee.fr "yfiler" Time: 10/17/04 18:34:19 [61:1002] The BMA named "yfiler dev" on host obelix.esiee.fr reached its inactivity timeout of 8400 seconds. The agent on host will be shutdown. [Critical] From: BSM(a)obelix.esiee.fr "yfiler" Time: 10/17/04 18:34:50 None of the Disk Agents completed successfully. Session has failed. [Normal] From: BSM(a)obelix.esiee.fr "yfiler" Time: 10/17/04 18:34:50 -- Regards, Frank Bonnet

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Downrev from 6.5.1R1 to 6.4.5
by Paul Letta 18 Oct '04

18 Oct '04

We have had some serious problems with NDMP restores since we went to 6.5. I have been unable to get either NetApp or my backup software company (Oracle - Reliaty Backup) to take it seriously. They both blame the hardware - even though I show the failure with 3 separate tape drives on 3 separate filers and multiple tape images, that all worked at pre-6.5. So to make the story short - I want to down rev one my filers from 6.5.1R1 to 6.4.5. Once I at 6.4.5, and the restores start to work again - I hope to get some more help out of either of NetApp and/or Oracle. I have not went with DP on any of the raid groups, so that will not be an issue. But I am a bit concerned about how long it will take. The filer is a FAS940, it has about 1.2TB of space and about 34 million files. Can anyone give me a hint to how long the revert will take ? Thanks, Paul -- Paul Letta Thomas Jefferson National Accelerator Facility Computer Center Unix System Administrator EMail: letta(a)jlab.org Phone: (757)269-5106

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parity drive rebuild causing ls hangs
by Jerry 18 Oct '04

18 Oct '04

Anyone ever experience really bad performance when rebuilding a parity disk? We had a parity disk fail on our FAS940 and when it was trying to rebuild the disk i/o util went to 100% (observed with sysstat). Reads and Writes did not appear high, but I don't think rebuild traffic effects those numbers. During this time, "ls" was taking between 30 and 60 seconds (unacceptable). We thought for sure this couldn't be normal, since we've had disks fail and rebuild many times. The difference this time is it was a parity disk, but I don't think that should make a difference other than taking a little longer to rebuild. Sure enough, after the rebuild was complete it started working again. Any opinions? Jerry __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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New disk from Seagate : ST373307FC
by Cedric Tabary 18 Oct '04

18 Oct '04

Hello, I buyed a new disk from Seagate and I am trying to make it work on my F760, Ontap 6.4.5, with /etc/disk_fw from now.netapp.com. The disk is a ST373307FC with Seagate firmware, the netapp did not manage to update it. The filer says : Mon Oct 18 15:47:15 GMT [disk.dynamicqual.failure.invalidFile:error]: Device qualification information file (/etc/qual_devices) is invalid. Please refer to the qual_devices man page for corrective action. This problem must be corrected within 72 hour(s) to avoid a forced system shutdown. The following disk(s) remain unqualified: 0a.4 [S/N 3HZ72YS500007436FAMW]. Mon Oct 18 15:47:15 GMT [dyn_dev_qual_admin:info]: Firmware is up-to-date on all disk drives I added a line in /etc/qual_devices : D SEAGATE ST373307FC 0006 512 vol status says : RAID Disk Device HA SHELF BAY CHAN Used (MB/blks) Phys (MB/blks) --------- ------ --------------- ---- -------------- -------------- Spare disks for block or zoned checksum volumes spare 0a.4 0a ? ? FC:A 34000/69632000 62228/127444216 sysconfig says : 4: SEAGATE ST373307FC 0006 34.0GB (143374743 512B/sect) 34.0GB ?! should be 72 !! Is there a way to flash the disk and make it work well on my filer ? Thanks Cédric

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Troubles with DATAPROTECTOR's HP backup software.
by Frank Bonnet 18 Oct '04

18 Oct '04

Hi Since several weeks we are in trouble to make HP DATA PROTECTOR 5.0 working with our F87, the filer is connected to a HP DLT 8000 thru the fastscsi bus It seems the filer do not send the end of session or something like that then the backup software wait forever for such signal. The ndmp session never terminate and is "seen" active and the backup snapshot is not deleted. Anyone has some info ? The filer is running 6.5.2R1 but the problem was the same with previous versions. Thanks a lot. see below error message [Normal] From: BMA-NDMP(a)obelix.esiee.fr "yfiler dev" Time: 10/17/04 16:14:10 DUMP: DUMP IS DONE [Normal] From: BMA-NDMP(a)obelix.esiee.fr "yfiler dev" Time: 10/17/04 16:14:10 DUMP: Deleting "/vol/vol0/../snapshot_for_backup.1" snapshot. [Major] From: BSM(a)obelix.esiee.fr "yfiler" Time: 10/17/04 18:34:19 [61:1002] The BMA named "yfiler dev" on host obelix.esiee.fr reached its inactivity timeout of 8400 seconds. The agent on host will be shutdown. [Critical] From: BSM(a)obelix.esiee.fr "yfiler" Time: 10/17/04 18:34:50 None of the Disk Agents completed successfully. Session has failed. [Normal] From: BSM(a)obelix.esiee.fr "yfiler" Time: 10/17/04 18:34:50 -- Regards, Frank Bonnet

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RESPOND IF YOU HAVE HAD A GOOD UNDERSTANDING OF WHAT YOU HAVE READ
by JEFFERSONbyrd＠tiscali.it 18 Oct '04

18 Oct '04

Subject- RE: HSBC Private Banking:Enquiry FROM: JEFFERSON BYRD I would respectfully request that you keep the contents of this mail confidential and respect the integrity of the information you come by as a result of this mail. I am contacting you independently of our investigation and no one is informed of this communication. I would like to brief you with certain facts that I believe would be of benefit to you. In 2000, Mr. John Brattle came to our bank to engage in business discussions with our private banking division. He informed us that he had a financial portfolio of 14.35 million United States Dollars, which he wished to have us invest on his behalf. I was the officer handling such transaction, I made numerous suggestions in line with my duties as the de-facto chief operations officer of the private banking sector, especially given the volume of funds he wished to put into our bank. We met on numerous occasions prior to any investments being placed.I encouraged him to consider various growth funds with prime ratings. The favored route in my advise to customers is to start by assessing data on 6000 traditional stocks and bond managers and 2000 managers of alternative investments. Based on my advice, We invested the money around various opportunities and made attractive margins for our first months of operation, the accrued profit and interest stood at over 16 million United States Dollars, this margin was not the full potential of the fund but he prefered low risk guaranteed returns on investments. In mid 2001, he asked that the money be liquidated because he needed to make an urgent investment requiring cash payments in the Netherlands. He directed that I liquidate the funds and had it deposited with a firm in the Netherlands. I informed him that HSBC would have to make special arrangements to have this done and in order not to circumvent due processes, the bank would have to make a 10.5 % deduction from the funds to cater for banking and statutory charges. He complained about the charges but later came around when I explained to him the complexities of the task he was asking of us. Cash movement across borders has become especially strict since the incidents of 9/11. I contacted my affiliate in Rotherdam and had the funds available in main land Europe. I undertook all the processes and made sure I followed his precise instructions to the letter and had the funds deposited at a Rotherdam based security and consultancy firm. This Asset Management firm is a specialised private firm that accepts deposits from high net worth individuals and blue chip corporations that handle valuable products or undertake transactions that need immediate access to cash. This small and highly private organization is familiar especially to the highly placed and well-connected organizations. In line with his instructions, the money was deposited with an Asset Management firm. Mr. John Brattle told me he wanted the money there in anticipation of his arrival from England later that week. This was the last communication we had, this transpired around 25th February 2003. In June later that year, we got a call from the Asset management firm informing us of the the inactivity of that particular portfolio. This was an astounding position as far as I was concerned, given the fact that I managed the private banking sector I was the only one who knew about the deposit at the firm, and I could not understand why Mr. John Brattle had not come forward to claim his deposit. All efforts to locate him was futile.I immediately passed the task of locating him to the internal investigations department of HSBC. Four days later, information started trickling in, apparently Mr. John Brattle was dead. A person who suited his description was declared dead of a heart attack in Canne, South of France. We were able to identify the body and cause of death was confirmed. The bank immediately launched an investigation into possible surviving next of kin to alert about the situation and also to come forward to claim his estate. If you are familiar with private banking affairs, those who patronize our services usually prefer anonymity, but also some levels of detachment from conventional processes. In his bio-data form, he listed no next of kin. In the field of private banking, opening an account with us means no one will know of its existence, accounts are rarely held under a name; depositors use numbers and codes to make the accounts anonymous. This bank also gives the choice to depositors of having their mail sent to them or held at the bank itself, ensuring that there are no traces of the account and as I said, rarely do they nominate next of kin. Private banking clients apart from not nominating next of kin also usually in most cases leave wills in our care, in this case; Mr. John Brattle died interstate. In line with our internal processes for account holders who have passed away, we instituted our own investigations in good faith to determine who should have right to claim the estate. This investigation has for the past months been unfruitful. We have scanned every continent and used our private investigation affiliate companies to get to the root of the problem. My official capacity dictates that I am the only party to supervise the investigation and the only party to receive the results of the investigation. According to practice, the Asset Management will by the end of this financial year broadcast a request for statements of claim to HSBC, failing to receive viable claims they will most probably revert the deposit back to HSBC. This will result in the money entering the HSBC accounting system and the portfolio will be out of my hands and out of the private banking division. This will not happen if I have my way. What I wish to relate to you might sound unethical practice but I want you to understand something. It is only an outsider to the banking world who finds the internal politics of the banking world aberrational. The world of private banking especially is fraught with huge rewards for those who occupy certain offices and oversee certain portfolios. There is US$ 14.35,000,000.00 deposited in Rotherdam, The Netherlands, I alone have the deposit details and they will release the deposit to no one unless I instruct them to do so. I alone know of the existence of this deposit for as far as HSBC is concerned, the transaction with Mr. John Brattle concluded when I sent the funds to Rotherdam, all outstanding interactions in relation to the file are just customer services and due process. The Asset Management has no single idea of the history or nature of the deposit. They are simply awaiting instructions to release the deposit to any party that comes forward. This bank has spent great amounts of money trying to track this man?s family; they have investigated for months and have found no family. The investigation has come to an end. My proposal; you share similar details to the late fellow; I am prepared to place you in a position to instruct the Asset Management firm to release the deposit to you as the closest surviving relation. Upon receipt of the deposit, I am prepared to share the money with you in half. That is: I will simply nominate you as the next of kin and have them release the deposit to you. We share the proceeds 50/50. I would have gone ahead to ask that the funds be released to me, but that would have drawn a straight line to me and my involvement in claiming the deposit. I can assure you that I could have the deposit released to you within a few days. I will simply inform the bank of the final closing of the file relating to Mr. John Brattle I will then officially communicate with the Asset Management firm and instruct them to release the deposit to you. With these two things: all is done. The alternative would be for us to have the firm direct the funds to another bank with you as account holder. This way there will be no need for you to think of receiving the money from the firm Management We can fine-tune this based on our interactions. If you find yourself able to work with me, contact me through the provided email account. If you give me positive signals, I will initiate this process towards a successful conclusion. . Please send your response to jeffersonbyrd(a)mail2world.com If we can be of one accord, we should plan a meeting, soon. I await your response. JEFFERSON BYRD __________________________________________________________________ Tiscali Adsl 2 Mega Free: naviga gratis tutto l'anno! Supera tutti i limiti di velocita' con Tiscali Adsl 2 Mega Free. Sei libero da costi fissi e, se ti abboni entro l'8 novembre, navighi gratis tutto l'anno. http://abbonati.tiscali.it/adsl/

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how data moves with dataontap command?
by cem iscen 18 Oct '04

18 Oct '04

Hi there, Is there any way using dataontap command to move data from one qtree to another qtree? Ndmpcopy just copied data to new location , doesn't delete the original data. Regards, Cem Iscen

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URGENT RESPONES
by emeka mike 18 Oct '04

18 Oct '04

Dear , I am the chairman of the contract award committee,of the Federal Ministry of Petroleum Resources,U.S.A. I am in search of an agent to assist us in the final transfer of [$30.75m] and subsequent investment in properties in your country. You will be required to : [1] Assist in the final transfer of the said sum. [2] Advise on lucrative areas for investment. [3] Assist us in purchase of properties. If you are interested to assist us in this regard, you will be given 20% of the total sum. You should please respond if you are interested for more details. Best Regards. Engr. David Emeka. ¡Sé listo! Contrata el antivirus http://www.pandasoftware.es/tienda/?idpers=109&track=13920

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read and get back
by shadak_love 17 Oct '04

17 Oct '04

___________________________________________________________________________ Mail sent from WebMail service at PHP-Nuke Powered Site - http://yoursite.com

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RE: parity drive rebuild causing ls hangs
by Derek Lai 15 Oct '04

15 Oct '04

What is your setting on raid.reconstruct.perf_impact? The default is set to medium. You can try to set it to low and the ls performance might be better. But keep in mind the rebuilds might take longer. How many disk is in your raidgroup? Keep in mind that when the filer is in rebuild mode, the number of I/O skyrockets. If you have 8 disks in the raidgroup and one disk fails, any single I/O request for a piece of information store in that raidgroup is going to cause 7X the amount of I/O compared to normal operation. This is not peculiar to NetApp but a normal thing for raid. One other way to get better performance without having the rebuilds take longer is to reduce the number of disk you have in the raidgroup. Derek -----Original Message----- From: Jerry [mailto:juanino@yahoo.com] Sent: Friday, October 15, 2004 6:55 AM To: list toasters Subject: parity drive rebuild causing ls hangs Anyone ever experience really bad performance when rebuilding a parity disk? We had a parity disk fail on our FAS940 and when it was trying to rebuild the disk i/o util went to 100% (observed with sysstat). Reads and Writes did not appear high, but I don't think rebuild traffic effects those numbers. During this time, "ls" was taking between 30 and 60 seconds (unacceptable). We thought for sure this couldn't be normal, since we've had disks fail and rebuild many times. The difference this time is it was a parity disk, but I don't think that should make a difference other than taking a little longer to rebuild. Sure enough, after the rebuild was complete it started working again. Any opinions? Jerry __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com

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RE: parity drive rebuild causing ls hangs
by Derek Lai 15 Oct '04

15 Oct '04

I don't think you want to focus on disk utilization during rebuilds. Even with the low impact setting it is supposed to rebuild as fast as it can, just give higher priority to regular data traffic. Derek -----Original Message----- From: Jerry [mailto:juanino@yahoo.com] Sent: Friday, October 15, 2004 9:37 AM To: Derek Lai Cc: 'toasters(a)mathworks.com' Subject: RE: parity drive rebuild causing ls hangs Writes were bouncing around, but no more than 10 Megabytes/sec. Even went the writes went down to 1MB/sec the util was still burried at 99 or 100%. --- Derek Lai <Derek.Lai(a)onyxco.com> wrote: > I don't think there is much difference between > rebuilding a data disk vs. > parity disk. Unless you are doing lots of writes. > Since the writes will also > have to update the parity disk, they may be > contending with the rebuild. Do > you have any idea how much writes were going on? > > > Derek > > -----Original Message----- > From: Jerry [mailto:juanino@yahoo.com] > Sent: Friday, October 15, 2004 9:02 AM > To: Derek Lai > Cc: 'toasters(a)mathworks.com' > Subject: RE: parity drive rebuild causing ls hangs > > > I think there are only 5 72g disks in that raid > group. > Still, I've done this with data disks many times, > and > the rebuild at "medium" is not really noticeable. > We > set it to low during the rebuild, still no effect. > > We're not talking about something a performance > metric > picked up, we're talking about a 30-60 sec on just > an > ls (small disk i/o presumeably). Something wasn't > right. > > --- Derek Lai <Derek.Lai(a)onyxco.com> wrote: > > > What is your setting on > > raid.reconstruct.perf_impact? The default is set > to > > medium. You can try to set it to low and the ls > > performance might be better. > > But keep in mind the rebuilds might take longer. > > > > How many disk is in your raidgroup? Keep in mind > > that when the filer is in > > rebuild mode, the number of I/O skyrockets. If you > > have 8 disks in the > > raidgroup and one disk fails, any single I/O > request > > for a piece of > > information store in that raidgroup is going to > > cause 7X the amount of I/O > > compared to normal operation. This is not peculiar > > to NetApp but a normal > > thing for raid. > > > > One other way to get better performance without > > having the rebuilds take > > longer is to reduce the number of disk you have in > > the raidgroup. > > > > > > Derek > > > > -----Original Message----- > > From: Jerry [mailto:juanino@yahoo.com] > > Sent: Friday, October 15, 2004 6:55 AM > > To: list toasters > > Subject: parity drive rebuild causing ls hangs > > > > > > Anyone ever experience really bad performance when > > rebuilding a parity disk? We had a parity disk > fail > > on our FAS940 and when it was trying to rebuild > the > > disk i/o util went to 100% (observed with > sysstat). > > Reads and Writes did not appear high, but I don't > > think rebuild traffic effects those numbers. > > > > During this time, "ls" was taking between 30 and > 60 > > seconds (unacceptable). We thought for sure this > > couldn't be normal, since we've had disks fail and > > rebuild many times. The difference this time is > it > > was a parity disk, but I don't think that should > > make > > a difference other than taking a little longer to > > rebuild. Sure enough, after the rebuild was > complete > > it started working again. Any opinions? > > > > Jerry > > > > __________________________________________________ > > Do You Yahoo!? > > Tired of spam? Yahoo! Mail has the best spam > > protection around > > http://mail.yahoo.com > > > > > > > __________________________________ > Do you Yahoo!? > Yahoo! Mail - Helps protect you from nasty viruses. > http://promotions.yahoo.com/new_mail > _______________________________ Do you Yahoo!? Declare Yourself - Register online to vote today! http://vote.yahoo.com

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RE: parity drive rebuild causing ls hangs
by Derek Lai 15 Oct '04

15 Oct '04

I don't think there is much difference between rebuilding a data disk vs. parity disk. Unless you are doing lots of writes. Since the writes will also have to update the parity disk, they may be contending with the rebuild. Do you have any idea how much writes were going on? Derek -----Original Message----- From: Jerry [mailto:juanino@yahoo.com] Sent: Friday, October 15, 2004 9:02 AM To: Derek Lai Cc: 'toasters(a)mathworks.com' Subject: RE: parity drive rebuild causing ls hangs I think there are only 5 72g disks in that raid group. Still, I've done this with data disks many times, and the rebuild at "medium" is not really noticeable. We set it to low during the rebuild, still no effect. We're not talking about something a performance metric picked up, we're talking about a 30-60 sec on just an ls (small disk i/o presumeably). Something wasn't right. --- Derek Lai <Derek.Lai(a)onyxco.com> wrote: > What is your setting on > raid.reconstruct.perf_impact? The default is set to > medium. You can try to set it to low and the ls > performance might be better. > But keep in mind the rebuilds might take longer. > > How many disk is in your raidgroup? Keep in mind > that when the filer is in > rebuild mode, the number of I/O skyrockets. If you > have 8 disks in the > raidgroup and one disk fails, any single I/O request > for a piece of > information store in that raidgroup is going to > cause 7X the amount of I/O > compared to normal operation. This is not peculiar > to NetApp but a normal > thing for raid. > > One other way to get better performance without > having the rebuilds take > longer is to reduce the number of disk you have in > the raidgroup. > > > Derek > > -----Original Message----- > From: Jerry [mailto:juanino@yahoo.com] > Sent: Friday, October 15, 2004 6:55 AM > To: list toasters > Subject: parity drive rebuild causing ls hangs > > > Anyone ever experience really bad performance when > rebuilding a parity disk? We had a parity disk fail > on our FAS940 and when it was trying to rebuild the > disk i/o util went to 100% (observed with sysstat). > Reads and Writes did not appear high, but I don't > think rebuild traffic effects those numbers. > > During this time, "ls" was taking between 30 and 60 > seconds (unacceptable). We thought for sure this > couldn't be normal, since we've had disks fail and > rebuild many times. The difference this time is it > was a parity disk, but I don't think that should > make > a difference other than taking a little longer to > rebuild. Sure enough, after the rebuild was complete > it started working again. Any opinions? > > Jerry > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > __________________________________ Do you Yahoo!? Yahoo! Mail - Helps protect you from nasty viruses. http://promotions.yahoo.com/new_mail

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Undeliverable: Re:
by System Administrator 14 Oct '04

14 Oct '04

Your message To: Malek.hamdan Subject: Re: Sent: Fri, 15 Oct 2004 05:19:03 +1000 did not reach the following recipient(s): Malek.hamdan on Fri, 15 Oct 2004 04:19:14 +1000 The recipient name is not recognized The MTS-ID of the original message is: c=au;a=telememo ;p=davnet pty. ltd.;l=SYD-MAIL-0104101418194AVY9K24 MSEXCH:IMS:Davnet Pty. Ltd.:Sydney:SYD-MAIL-01 0 (000C05A6) Unknown Recipient

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FW: NetApp Question
by Alec Devroey 14 Oct '04

14 Oct '04

Could anyone answer any of the following questions: SQL Questions I have 2 SQL Servers that replicate with each other using SQL Replication. One of the servers (Server1) Is a remote server at a Site and the other (Server 2) is based in a DataCenter and is connected to a FAS. If I would use SnapManager for SQL and restore a snapshot of the SQL Database what would happen to my SQL Synchronisation. Firewall Questions I also have 2 SQL servers in the DMZ, What do I need to do to the our firewall to allow these 2 servers to connect to the FAS, What are my possibilities, Is it a high security risk Snapshots How do I configure snapshots to act like a GFS rotation, Daily, weekly and Monthly Windows Question Is there a limit on how many Tape Devices I can connect to Windows Server without affecting backup performance, someone once told me that is recommended that only 4 drives should be connected. All help greatly appreciated Met Vriendelijke Groeten Alec Devroey Consultant - Systems & Data Integration Simac nv/sa KMO zone Guldendelle Arthur De Coninckstraat 5 B-3070 KORTENBERG Belgium Tel. General +32 (0)2 7551511 Tel Mobile +32 (0)476 610363 E-Mail: alec.devroey(a)simac.be <mailto:n@simac.be> Web-site: http://www.simac.be <http://www.simac.bbe/> ##################################################################################### This e-mail and any attached files are confidential and may be legally privileged. If you are not the addressee, any disclosure, reproduction, copying, distribution, or other dissemination or use of this communication is strictly prohibited. If you have received this transmission in error please notify Simac immediately and then delete this e-mail. Simac has taken all reasonable precautions to avoid virusses in this email. Simac does not accept liability for damage by virusses, for the correct and complete transmission of the information, nor for any delay or interruption of the transmission, nor for damages arising from the use of or reliance on the information. All e-mail messages addressed to, received or sent by Simac or Simac employees are deemed to be professional in nature. Accordingly, the sender or recipient of these messages agrees that they may be read by other Simac employees than the official recipient or sender in order to ensure the continuity of work-related activities and allow supervision thereof. #####################################################################################

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netapp ndmp backup faq anywhere?
by Tavis Gustafson 13 Oct '04

13 Oct '04

Does anyone know of a recent backup over ndmp faq I could look at. I would like to backup 15 or so netapps to tape via ndmp. Is there a viable free method of doing this? Comercial solutions cost upwards of 30K ! thank, -Tavis

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Bug ID 135544 : I prefer avoiding put too-new disk in the broken state
by Stephane 13 Oct '04

13 Oct '04

<< Bug ID 135544 Title Disk with label problem doesn't appear in sysconfig -r or FilerView ... Notes Formatted Data ONTAP 6.5 includes a fix whereby disks with an invalid or too-new label version are assimilated into the "broken" pool, so will appear in sysconfig -r and FilerView. Label assimilation will signal the presence of such a disk with a raid.config.disk.bad.label.version event to the messages and EMS logs. >> I don't call this a fix. It doesn't let you move a volume from a dead Filer to another one running. You could broke your precious data on this volume. If disk unfail is issued on this disk, they lost their label. It is a rigid mechanism. Better would be to marginalize these disk at the wafl level and not put them on the break state.

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Undeliverable: Re:
by System Administrator 13 Oct '04

13 Oct '04

Your message To: Malek.hamdan Subject: Re: Sent: Wed, 13 Oct 2004 11:28:10 +1000 did not reach the following recipient(s): Malek.hamdan on Wed, 13 Oct 2004 10:28:16 +1000 The recipient name is not recognized The MTS-ID of the original message is: c=au;a=telememo ;p=davnet pty. ltd.;l=SYD-MAIL-0104101300284AVY888D MSEXCH:IMS:Davnet Pty. Ltd.:Sydney:SYD-MAIL-01 0 (000C05A6) Unknown Recipient

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Who's going to 7.0, and when?
by James Brigman 12 Oct '04

12 Oct '04

Hey Folks; DO 7.0 promises some revolutionary capabilities when it becomes available "real soon now". How many of you out there are going to upgrade to it as soon as you can? Anyone? JKB

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