toasters December 2000

toasters@lists.teaparty.net

112 participants
116 discussions

Relying on automatic load on DLT7000 drive
by Chris Thompson 11 Dec '00

11 Dec '00

Maybe it's a mistake having put myself on the weekly newbugs mailing list: examining the list always leads to alarm and despondency... :-) This week it's 29835. That describes a problem with cleaning tapes and issuing the SCSI LOAD command against a DLT7000, and has | Solution or Fix: | The filer will refrain from issuing the LOAD command to the DLT7000 | at all, since the device autoloads the tape. Available in 5.3.7R2, | 6.0.2 and 6.1. That sounds as if NetApp is about to remove a feature (accident?) which I think I have been relying on. We have a (Tandberg) DLT7000 drive with no stacker attached to an F740. It certainly "autoloads" when a tape is inserted. However, after an unload, the same tape can be reloaded without manual intervention by accessing it from the F740 - I presume that's the result of the LOAD command at issue. I have used this for adding incremental dumps at times when there's no human available to change tapes (e.g. weekends). Apart from that, there's a positive advantage in the idle state of the drive being the unloaded one. If the tape is loaded, a power outage will leave the tape directory marked invalid, and the tape controller will need to scan the whole tape for filemarks before it can do anything with it, which can take well over an hour. (Not that this has happened to us on the F740: it's based on experience with DLTs in other contexts.) Chris Thompson University of Cambridge Computing Service, Email: cet1(a)ucs.cam.ac.uk New Museums Site, Cambridge CB2 3QG, Phone: +44 1223 334715 United Kingdom.

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Re: Re: Qualstar AIT-2 and Veritas
by lkaptan＠pro-link.net 11 Dec '00

11 Dec '00

Is there anybody who tested to backup one filer to another one using veritas ? Original Message: ----------------- From: Rune Bakken rb(a)nextra.com Date: 11 Dec 2000 17:23:52 +0100 Subject: Re: Qualstar AIT-2 and Veritas BrianH(a)dice.com writes: > I cannot comment on Veritas, I was unable to eval their product because they > do not support NDMP on anything but solaris. Uh? Then why is Veritas selling me NDMP for NetApp client? http://www.support.veritas.com/dsl/lists/nbu_os_ddProduct_NETBACKUPDC_prod1… Anyway I have a QualStar 4660 still in the box, waiting for me to find time to have it installed on my new mediaserver. I do plan to use fiber to connect my filer, mediaserver and library. My dealer has promised me that this will work ... >>>>>>>>.rune -- Rune Bakken "I feel sorry for people who don't drink. System Administrator When they wake up in the morning, that's as Nextra, good as they're going to feel all day." a Telenor Company - Frank Sinatra ------------------------------------------------------------------- This message has been posted from Mail2Web http://www.mail2web.com/ Web Hosting for $9.95 per month! Visit: http://www.yourhosting.com/ -------------------------------------------------------------------

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RE: Relying on automatic load on DLT7000 drive
by Hu, Chang-Ping 11 Dec '00

11 Dec '00

There are a few rationales behind the change. 1. To provide a fix to allow proper handling of a cleaning tape by DLT tape libraries (Burt #29835.) 2. In the case of a stand-alone drive, to provide a consistent drive behavior across various tape drive types. AIT and Exabyte drives will physically eject a tape when an unload command is issued. This change will make the DLT drives respond in a similar way, even though it does not physically eject the tape. 3. The change will require a user to manually reload the tape to enable the DLT drive to read it. This prevents accidentally overwriting a tape user may otherwise think has been unloaded. Again, this is no different from the AIT and Exabyte drives. Also, the change should only affect stand-alone DLT drives and not DLT stackers. Once the stacker robotics unloads and loads a new tape into the drive, a LOAD command will be issued to put the drive in ready mode. In your particular case, to add incremental dumps, an alternative is to use nrst0a instead urst0a. If you don't really care about the previous data on the tape, you can even use rst0a. C.P. Hu FSR QA, Network Appliance -----Original Message----- From: Chris Thompson [mailto:cet1@cus.cam.ac.uk] Sent: Monday, December 11, 2000 7:21 AM To: toasters(a)mathworks.com Subject: Relying on automatic load on DLT7000 drive Maybe it's a mistake having put myself on the weekly newbugs mailing list: examining the list always leads to alarm and despondency... :-) This week it's 29835. That describes a problem with cleaning tapes and issuing the SCSI LOAD command against a DLT7000, and has | Solution or Fix: | The filer will refrain from issuing the LOAD command to the DLT7000 | at all, since the device autoloads the tape. Available in 5.3.7R2, | 6.0.2 and 6.1. That sounds as if NetApp is about to remove a feature (accident?) which I think I have been relying on. We have a (Tandberg) DLT7000 drive with no stacker attached to an F740. It certainly "autoloads" when a tape is inserted. However, after an unload, the same tape can be reloaded without manual intervention by accessing it from the F740 - I presume that's the result of the LOAD command at issue. I have used this for adding incremental dumps at times when there's no human available to change tapes (e.g. weekends). Apart from that, there's a positive advantage in the idle state of the drive being the unloaded one. If the tape is loaded, a power outage will leave the tape directory marked invalid, and the tape controller will need to scan the whole tape for filemarks before it can do anything with it, which can take well over an hour. (Not that this has happened to us on the F740: it's based on experience with DLTs in other contexts.) Chris Thompson University of Cambridge Computing Service, Email: cet1(a)ucs.cam.ac.uk New Museums Site, Cambridge CB2 3QG, Phone: +44 1223 334715 United Kingdom.

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cifs testdc problem and 1D registration conflict
by Tom "Mad Dog" Yergeau 11 Dec '00

11 Dec '00

We'd been seeing a problem where a cifs testdc would yield the following results: filer> cifs testdc Using Established configuration Current Mode of NBT is H Mode Netbios scope "" Registered names... FILER < 0> WINS FILER < 3> WINS FILER <20> WINS DOMAIN < 0> WINS Testing Primary Domain Controller found 1 addresses trying 192.168.0.10...192.168.0.10 is alive found PDC DC-001 Testing all Domain Controllers found 3 addresses trying 192.168.0.10...192.168.0.10 is alive trying 192.168.0.10...192.168.0.10 is alive trying 192.168.0.13...192.168.0.13 is alive found DC DC-001 at 192.168.0.10 Not able to communicate with DC 192.168.0.10 found DC DC-002 at 192.168.0.13 NetApp was perplexed, had me re-run CIFS setup, etc. to no avail. Today we rebooted our PDC because we noticed that the master browser registration was in conflict: NetBIOS Remote Machine Name Table Name Type Status --------------------------------------------- PDC <00> UNIQUE Registered PDC <20> UNIQUE Registered DOMAIN <00> GROUP Registered DOMAIN <1C> GROUP Registered DOMAIN <1E> GROUP Registered PDC <03> UNIQUE Registered DOMAIN <1D> UNIQUE Conflict ..__MSBROWSE__.<01> GROUP Registered DOMAIN <1B> UNIQUE Registered After the PDC rebooted, the cifs testdc problem went away. I know I've corresponded with some folks from toasters who were having this cifs testdc problem. If you're having the problem, can you do an nbtstat -a on your PDC, and see if you see a <1D> entry in conflict? Thanks, Mad Dog For your enjoyment: http://support.microsoft.com/support/kb/articles/Q163/4/09.asp

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RE: Backup software recommendation?
by Benn, Paul 11 Dec '00

11 Dec '00

Roger, The mainstream NT backup apps all work pretty well with filers. Backing up over CIFS is slower than using an NDMP enabled application, though. Take a look at our white paper on this subject. Admittedly it's based on some older hardware and software versions but it should still provide you enough information to get your NT based solution implemented. http://www.netapp.com/tech_library/3052.html Regards, Paul Benn Network Appliance -----Original Message----- From: rbonine(a)millermartin.com [mailto:rbonine@millermartin.com] Sent: Monday, December 11, 2000 9:47 AM To: toasters(a)mathworks.com Subject: Backup software recommendation? We are in the process of installing an F720 to be used in an all-NT server environment. Can anyone recommend a good backup platform? We're planning to use an ADIC FastStor library connected to one of our NT boxes. Data size will be roughly 150 Gb. Will Backup Exec support this configuration? Their latest version, 8.5, mentions "NAS support", but doesn't go into any details. Any suggestions will be appreciated... ---------------------------------------- Roger Bonine IT Manager, System Support Miller & Martin LLP ---------------------------------------- *************************** CONFIDENTIALITY NOTICE *************************** The information contained in this e-mail message is legally privileged and confidential, and is intended only for the use of the addressee. Any dissemination, distribution, or copying of this e-mail by an unauthorized recipient is prohibited. If you have received this e-mail in error, please immediately notify us by reply e-mail and delete this message and any attachments. Please also advise us immediately if you or your employer does not consent to receipt of Internet e-mail for confidential messages of this kind. **************************************************************************** ***

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Backup software recommendation?
by rbonine＠millermartin.com 11 Dec '00

11 Dec '00

We are in the process of installing an F720 to be used in an all-NT server environment. Can anyone recommend a good backup platform? We're planning to use an ADIC FastStor library connected to one of our NT boxes. Data size will be roughly 150 Gb. Will Backup Exec support this configuration? Their latest version, 8.5, mentions "NAS support", but doesn't go into any details. Any suggestions will be appreciated... ---------------------------------------- Roger Bonine IT Manager, System Support Miller & Martin LLP ---------------------------------------- *************************** CONFIDENTIALITY NOTICE *************************** The information contained in this e-mail message is legally privileged and confidential, and is intended only for the use of the addressee. Any dissemination, distribution, or copying of this e-mail by an unauthorized recipient is prohibited. If you have received this e-mail in error, please immediately notify us by reply e-mail and delete this message and any attachments. Please also advise us immediately if you or your employer does not consent to receipt of Internet e-mail for confidential messages of this kind. *******************************************************************************

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Veritas & Filers, or: to NDMP or not to NDMP ...
by Shaun T. Erickson 11 Dec '00

11 Dec '00

... that is the question. I am switching from BudTool to Veritas Netbackup. It seems, if I understand things correctly, that I can either back up my filers over NFS, or I can use NDMP and back them up to a locally attached tape drive, or to another filer with a locally attached tape drive. NDMP seems the way to go, for performance and speed reasons. However, I stopped using NDMP with BudTool, because everytime I had to upgrade either BudTool or OnTap, I ran into compatability problems between the differing NDMP implimentations. What has been the experience of those of you who are using Veritas and have tried the above solutions? Which method do you suggest I use, and why? -ste -- Office: (908) 582-7629 Cell: (908) 672-6456 Pager: (888) 290-2057

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Re: Qualstar AIT-2 and Veritas
by Rune Bakken 11 Dec '00

11 Dec '00

BrianH(a)dice.com writes: > I cannot comment on Veritas, I was unable to eval their product because they > do not support NDMP on anything but solaris. Uh? Then why is Veritas selling me NDMP for NetApp client? http://www.support.veritas.com/dsl/lists/nbu_os_ddProduct_NETBACKUPDC_prod1… Anyway I have a QualStar 4660 still in the box, waiting for me to find time to have it installed on my new mediaserver. I do plan to use fiber to connect my filer, mediaserver and library. My dealer has promised me that this will work ... >>>>>>>>.rune -- Rune Bakken "I feel sorry for people who don't drink. System Administrator When they wake up in the morning, that's as Nextra, good as they're going to feel all day." a Telenor Company - Frank Sinatra

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RE: VERITAS platforms (was Qualstar AIT-2 and Veritas)
by Steve Kappel 11 Dec '00

11 Dec '00

Brian wrote: ... >I cannot comment on Veritas, I was unable to eval their product because they >do not support NDMP on anything but solaris. Just to clarify, this was with the NetBackup 3.1.1 release which is pretty old. VERITAS NetBackup NDMP is supported on the following platforms beginning with version 3.2 (spring 1999): Solaris (sparc) NT HP/UX AIX __________________________________________________________________________ Steve Kappel steve.kappel(a)veritas.com VERITAS Software steve.kappel(a)iname.com (Personal)

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RE: Qualstar AIT-2 and Veritas
by Alvarado, Michael 11 Dec '00

11 Dec '00

Have you considered the GbE AIT 2 library from SpectraLogic? -----Original Message----- From: Moshe Linzer [mailto:Moshe.Linzer@nsc.com] Sent: Sunday, December 10, 2000 4:00 AM To: toasters(a)mathworks.com Subject: Qualstar AIT-2 and Veritas In our quest for a Budtool + tape library replacement, we are currently looking at Veritas NetBackup and a Qualstar AIT-2 tape library for our 2 NetApp F760's. Does anyone have experience with this combination? Qualstar makes a good argument for AIT technology. Is AIT-2 fully supported on the 760? From looking on NOW, I noticed a few things: 1. The F760 SCSI port is HVD, Qualstar library is LVD-SE, so I need a converter. Can the Filer port be changed to LVD-SE? 2. Tape drive matrix on NOW (http://now.netapp.com/NOW/knowledge/docs/olio/cert_matrices/tape_drives.sht ml) says that versions below OnTap 6.0 require a PVR. What exactly is a PVR? Will I still get full performance from the drive? Is anyone using Veritas with a Qualstar library? Thanks, Moshe -- ---------------------------------------------------------------------------- - Moshe Linzer | On the Internet, Unix Systems Manager | National Semiconductor, Israel | nobody knows you're a moron. Phone: 972-9-970-2247 | Fax: 972-9-970-2001 | - Network Magazine Email: moshel(a)nsc.com | ---------------------------------------------------------------------------- -

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toasters December 2000