toasters April 2002

toasters@lists.teaparty.net

113 participants
140 discussions

RE: Tape drive recommendations
by Ben Rockwood 25 Apr '02

25 Apr '02

I can't resist to step in here. The battle of the tape format is continuing day by day. Many vendors are pushing people away from current DLT technology saying it's doomed, and that AIT isn't far behind. The big pushes are on LTO's and newer drives. I've had my eye on StorageTek for awhile now because they are doing some really neat things, namely FC to the drive in their T9840B drive. The T9940's are nice two with 60G native and 120G 2:1 compressed. But then it all comes down to your stratagy. If you have a small enviroment and you only want to back up, say 1-2TB, then you might like some of the 20slot AIT2/3 arrays from ADIC. SDLT is looking good with native capacities for 110G and higher with compression plus descent speed, however a key factor between DLT and AIT right now is also physical size. If you have a cramped facility you may not have adiquate room for DLT robots, which is where the nice and tiny AITs are handy. There are alot of choices. Currently I'm still liking LTO because it has 15MB/sec sustained rates per drive plus a 100G native capacity, but right now it probly comes down to cost more than anything. In which case, if you buy a robot, buy bigger than you need to so you can scale later. As for which is best specifically for a Filer, I know that you supposedly can put a robot directly onto a head, but I haven't seen anyone do it, and probly would opt to use a seperate gig-network with a dedicated backup server and anything I wanted on the back end of it. Maybe that helps. I hope. Ben Rockwood -----Original Message----- From: Jeff Kennedy [mailto:jlkennedy@amcc.com] Sent: Thu 4/25/2002 6:26 AM To: dwald(a)kersey.yi.org Cc: toasters(a)mathworks.com Subject: Re: Tape drive recommendations Here are my thoughts: AIT: pros: Great product, nice access time due to the embedded chip, best choice for nearline tape storage, small footprint cons: only media supplier is Sony, the rest are just re-sellers (chances are they aren't going anywhere but you never know) SDLT: pros: Long track record, can read older DLT media (if BRC drive), supported by everyone cons: potential for mixing media LTO: not a big fan of LTO, thought it would be great in the beginning but the "unified format" fractured long before I thought it would. ~JK dwald(a)kersey.yi.org wrote: > > Hi all. > > We've been using DLT7000 drives off the back of our 740's for some time > now, and are looking to upgrade. > > According to the NOW site, NetApps supports the SuperDL220, AIT-3 and some > of the LTO's, among others. > > Capacity and throughput are somewhat close across the three types, I'm > curious for any thoughts on which is preferred? Any horror stories on any > of these with Filers? > > Thanks -- ===================== Jeff Kennedy Unix Administrator AMCC jlkennedy(a)amcc.com

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Quantum/ATL P14000, gigabit Ethernet sdlt -- anyone else using this?
by Quentin Fennessy 25 Apr '02

25 Apr '02

We recently purchased a Quantum/ATL P14000 (2xP7000), configured with Gigabit Ethernet sdlt tape drives on a Cisco switch. We are using Workstation Solutions QuickRestore, version 2.7.10. We're trying to backup Netapps (F760s, 840s, 880s) via a Solaris QR host. Unsuccessfully. Is anyone else using the P7000 or P14000 changer? With Gig SDLT? With QR? Our challenges are legion. Are we alone? I'd like to correspond with or talk with someone who has made this configuration work. Thanks -- Quentin Fennessy Quentin.Fennessy(a)amd.com Office: 512.602.3873 Cell: 512.694.7489

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Tape drive recommendations
by dwald＠kersey.yi.org 25 Apr '02

25 Apr '02

Hi all. We've been using DLT7000 drives off the back of our 740's for some time now, and are looking to upgrade. According to the NOW site, NetApps supports the SuperDL220, AIT-3 and some of the LTO's, among others. Capacity and throughput are somewhat close across the three types, I'm curious for any thoughts on which is preferred? Any horror stories on any of these with Filers? Thanks

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Backups to 6 tapes failing
by Clawson, Simon 25 Apr '02

25 Apr '02

Hi! We are using Veritas Netbackup Datacenter to backup a filer running 5.3R2 to a DLT 4700 7 slot device. I am seeing a backup on one volume to 3 tapes working fine, but a backup to more than 4 tapes seems to fail. The backup runs and selects tape 6, tape 5, tape 4 and tape 1, missing tapes 3 & 2. It will then time out and error saying cannot allocate new media. Has anyone else seen this behaviour? Simon Simon Clawson TEL:- +44 (0)1635 811409 HDL Designer Series Team Systems Administrator FAX:- +44 (0)1635 810108 Mentor Graphics Ireland Ltd (UK Branch) MOB:- +44 (0)7788 716071 Rivergate London Road Newbury Berkshire RG14 2QB

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URGENT REPLY NEEDED
by MR AUGUSTINE EGOAMAKA 25 Apr '02

25 Apr '02

SIR, IT IS MY PLEASURE TO CONTACT YOU REQUESTING FOR YOUR BANK ACCOUNT WHERE WE COULD MAKE A FUND TRANSFER OF TWENTY-THREE MILLION EIGHT HUNDRED THOUSAND UNITED STATES DOLLARS (US$23,800,000.00) FROM MY MINISTRYS BANK ACCOUNT FOR OUR PERSONAL USE. THIS REQUEST INVOLVES THREE OTHERS AND I. I WORK FOR THE FEDERAL MINISTRY OF AVIATION, ABUJA, NIGERIA AND MY POSITION IS PRINCIPAL ACCOUNT. TWO OF THE DIRECTORS IN THIS SPECIAL REQUEST WILL GO ON RETIREMENT IN JUNE 2002 AND FOR THIS REASON, WE HAVE INCLUDED THE ABOVE SUM TO THE BULK SUM APPROVED TO BE PAID TO OUR SUNDRY CONTRACTORS WHOSE PROJECTS HAVE BEEN COMPLETED AND COMMISSIONED. IT IS IMPORTANT TO NOTE THAT THIS SUM EMANATED FROM A PROJECT INITIALLY CONTRACTED TO A FIRM IN EUROPE. THIS WAS PRECISELY THREE YEARS AGO AND ON OUR RECORDS OF ENTRIES, WE HAD TREATED THE CONTRACT AS HAVING BEEN EXECUTED AND COMMISSIONED ALONGSIDE WITH OTHERS NOW OUTSTANDING. IMPORTANTLY, IT MUST BE UNDERSTOOD THAT THE DIRECTORS INVOLVED IN THIS TRANSFER BUSINESS IN THEIR RECENT BOARD MEETINGS PRESENTED THE BILLS AND THIS AMONG OTHERS RECEIVED APPROVALS FOR IMMEDIATE REMITTANCE. MEANWHILE, WE HAVE WORKED OUT THE MODALITIES NEEDED TO TRANSFER THE FUND. ALSO, WE WISH TO ASSURE YOU THAT YOUR INTEREST WILL BE PROTECTED AS REGARDS SECURITY, WHICH IS RISK-FREE. THEREFORE, WE URGENTLY REQUEST FOR YOUR BANK ACCOUNT PARTICULARS WHERE THE US$23.8M SHALL BE PAID INTO IN ONLY ONE INSTALLMENT. THAT IS THE ACCOUNT MUST BE ABLE TO RECEIVE THE ABOVE SUM AT A GO. YOU WILL BE HEAVILY REWARDED FOR THE ACTIVE ROLL YOU WILL PLAY IN THIS BUSINESS. WE ARE NOT UNAWARE THAT THE FUND WHEN ARRIVES YOUR ACCOUNT WOULD SUFFER TAX AND OTHER BANK CHARGES IN YOUR COUNTRY. ALL WILL BE DEDUCTED BEFORE DISBURSEMENT. WE SHALL OPEN ACCOUNT IN YOUR COUNTRY WHERE OUR VARIOUS SHARES SHALL BE TRANSFERRED BUT THIS WILL BE FULLY DISCUSSED LATER. FINALLY, WE BELIEVE YOU CAN UNDERSTAND THAT THIS BUSINESS SHOULD NOT GO ON AIR. YOU SHOULD PLEASE TREAT IT AS STRICTLY CONFIDENTIAL AND PLEASE REACH ME QUICKLY ON MY TEL234-90-505561 FOR THE ACTION TO START. ON BEHALF OF MY COLLEAGUES, I THANK YOU FOR YOUR ACCEPTANCE IN ADVANCE. YOURS SINCERELY, MR AUGUSTINE EGOAMAKA

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REQUEST FOR HUMBLE ASSISTANCE.
by MR GORIS ACHA 25 Apr '02

25 Apr '02

Sir, REQUEST FOR HUMBLE ASSISTANCE. This letter is meant to contact you following knowledge of your esteemed self to help us out of this difficult situation that my family has been engulfed in since the death of my father and the breadwinner of our family. So please, consider this as a request from a family in dare need of assistance. I am Mr. Goris Acha from Angola, the first and the only son of late Brigadier Luis Acha communicating to you from Johannesburg, Republic of South Africa. I, on behalf of my family decided to solicit for your Assistance to transfer the sum of US$25.5milloin (twenty five million five hundred thousand united state dollars)inherited from my late father into your company or private bank account. Before the death of my father, he was a brigadier in charge of arms and ammunition procurement for the Angolan army. In his will, he specifically drew my attention to the sum of US$25.5million that he deposited in the safe box of a private security company in Johannesburg, South Africa. In fact he said and I quote, "My beloved son, I wish to draw your attention to the sum of US$25.5 million. I deposited the box containing the fund in a security company in Johannesburg, South Africa as valuables. During the war, I was very dedicated and committed to wining the war against the rebels until when I found out that senior army officers and government functionaries were busy helping themselves with government funds and properties sending them to foreign countries. Due to this, when I and former special adviser to the president were assigned by the president (Jose EduardoSantos) to purchase arms in South Africa, we saw this as an opportunity to divert the money for our personal use and shared it, of which I got a total sum of US$25.5million. I did this in case of my absence due to death so that you Goris, your two sisters Grace and Anne and your mother wouldn't suffer. You should solicit for assistance of a reliable and sincere foreign partner to assist you to transfer this money out of South Africa for investment. I deposited the box in your name and you can claim it alone with the deposit code. Your mother is with all the documents; take good care of your mother and your two sisters. Do not disappoint me! Good bye". After the burial of my father, we decided to move to South Africa where this money was deposited and withdraw it and put to use and was disappointed to learn that it is against the human Right law SECTION22 OF THE REFUGEES ACT NO 130 OF 1998 that asylum seekers in the country do not have the right to operate a bank account or operate an enterprise in the country. After much consideration, we arrived at conclusion that it will be of interest for us to contact a foreign partner to assist us transfer this money out of South Africa. From these words of my late father, you will understand that the lives and future of my family depend on this fund as such I will be grateful if you can assist us. Now what I will like you to do for us, as a foreign partner is to help us clear this fund from the Security Company using your name as the beneficiary of the fund. For your efforts, we are prepared to offer you 20% of the total sum while 10% will be set aside for expenses Incurred during the course of this transaction and the remaining 70% for the family's investment abroad which you will assist us to materialize. Please note that this transaction is risk-free and the major thing I ask from you is to assure me the safety of the money when transferred to your account. Your utmost trust, sincerity and confidentiality is highly needed in this transaction. Be kind to provide me with your private communication facilities for smooth and confidential link. Further information and arrangement will commence as soon as trust, confidence and good relationship is established. I shall be most grateful if you maintain the confidentiality of this matter. Should this meet your utmost consideration, please give me your earliest reply through my email address. Best regards, Mr. Goris Acha

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Any Tru64 Unix (nee Digital Unix, nee nee OSF 1) V5.1A users out there?
by Matt Phelps 24 Apr '02

24 Apr '02

Here's one... Anyone out there have read-only exports on a filer mounted by a Tru64 Unix alpha? We've upgraded a few of our Alphas to 5.1A (from 4.0x) and now the "pwd" and "df" commands fail on the read-only exported directories. They generate an error having to do with a read-only file system. The very same directories work fine with DU 4.0x. I've opened a call with Compaq, but I was wondering if anyone else on the list has run into this. -- Matt Phelps System Administrator, Computation Facility Harvard - Smithsonian Center for Astrophysics mphelps(a)cfa.harvard.edu, http://cfa-www.harvard.edu/~mphelps

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URGENT REPLY NEEDED
by MR AUGUSTINE EGOAMAKA 24 Apr '02

24 Apr '02

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RE: disappearing disks
by Sam Schorr 24 Apr '02

24 Apr '02

Chris, I've gone back and researched this some more, and you are right on the money - all these disappearing disks have been 18 Gb ones. Contrary to my prior message, all our 36 Gb disk failures have done so in the expected manner - autosupport sent out and the disk marked as failed on the filer. Since the 18 Gb are EOL, I don't expect much effort being made to fix the firmware. The concern would be that Netapp no longer sells 18 Gb drives, you can only get them through support. I can only hope their supply does not run out before we upgrade/swap out the 18's. --sam -----Original Message----- From: Chris Blackmor [mailto:chris.blackmor@amd.com] Sent: Tuesday, April 23, 2002 9:47 AM To: Sam Schorr Cc: Server Team; toasters Subject: Re: disappearing disks Sam, If these are 18G drives they have a known failure problem where they just spin down. I have lost 6 in the past month (but with 22 filers I am not concerned - eat all you want... they'll make more). Anyway, with FC disks you can run (as root) the following command and if you see an XXX in any of the disk spots the drive is screwed and needs to be replaced. > remsh m5 fcadmin device_map Loop Map for channel 0a: Translated Map: Port Count 1 7 Shelf mapping: Loop Map for channel 1: Translated Map: Port Count 57 7 0 1 2 3 8 9 10 11 16 17 18 19 24 25 26 27 32 33 34 35 40 41 42 43 48 49 50 51 56 57 58 59 60 61 62 52 53 54 44 45 46 36 37 38 28 29 30 20 21 22 12 13 14 4 5 6 Shelf mapping: Shelf 0: 6 5 4 3 2 1 0 Shelf 1: 14 13 12 11 10 9 8 Shelf 2: 22 21 20 19 18 17 16 Shelf 3: 30 XXX 28 27 26 25 24 Shelf 4: 38 37 36 35 34 33 32 Shelf 5: 46 45 44 43 42 41 40 Shelf 6: 54 53 52 51 50 49 48 Shelf 7: 62 61 60 59 58 57 56 On Mon, Apr 22, 2002 at 08:24:49AM -0700, Sam Schorr wrote: > We are running 6.1R1 and we have seen a frequent number of disks suddenly disappear without "failing" in the sense that the filer marks the disk as "failed". What we see is the disk is noticed as missing, there is a message to that effect in /etc/messages, but the disk does not show as failed in sysconfig -r nor does it show in sysconfig -d. If the disk is pulled and a new disk inserted, a "failed" message appears first, then the new disk is added as a spare. The original disk that went missing did have its data spared out. > > We have had to write our own monitoring scripts to pull disk counts from the MIB's so that this condition can be noticed right away. Netapp support says that this "never happens" but we have the /etc/messages files to show the problem. It may be fixed in 6.2? > > -----Original Message----- > From: Geoff Hardin [mailto:geoff.hardin@dalsemi.com] > Sent: Monday, April 22, 2002 6:50 AM > To: toasters > Subject: disappearing disks > > > Fellow toasters; > I have an F760 cluster running NetApp Release 6.1R1P1. In the past > week, we have "lost" two disks on separate shelves. The disks seem to > disappear from the filer and do not show up. All the disks are Seagate > ST318203FC 18GB drives with firmware NA10. I've seen this happen before > on spare disks, and the first disk we lost this week was a spare. > Typically, the spare fails and just stops reporting; if you slip it into > a different slot the disk reports as failed. No big deal, just a spare > failing and the filer doesn't know what to do with it immediately. > But yesterday, we lost a data disk; it actually didn't show up in the > weekly cluster notification log that runs at midnight. Around 2pm we > received a disk fail alert for the drive and a disk/shelf miscount > error. While checking on this, I noticed a third disk, another spare, > had "disappeared"; however, once the volume rebuild completed, this disk > "reappeared." > I was wondering if anyone else had seen similar behavior on their > filers? Like I said, this is a cluster, and it's partner was still able > to see the third disk that "disappeared", which leads me to believe I > have an FC-AL adapter failing. All three disks have been on separate > shelves, which also leads me away from suspecting an LRC (that would be > too easy). Before I go tearing into the filer though, I wanted to see > if anyone else had experience with this problem. > > Thanks, > > Geoff Hardin > geoff.hardin(a)dalsemi.com > > "A one-question geek test: Seen on a California license plate on a VW > Beetle: 'FEATURE'..." - Joshua D. Wachs -- ----------------------------------------------------------------------------- * | * * Chris Blackmor _______ | Good judgment comes from * * Advanced Micro Devices \____ | | experience * * Phone: (512) 602-1608 /| | | | And a lot of that comes * * Fax: (512) 602-5155 | |___| | | from * * Email: chris.blackmor(a)amd.com |____/ \| | bad judgment! * * | Author Unknown* ----------------------------------------------------------------------------- * My comments are mine, and mine alone. * -----------------------------------------------------------------------------

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NetBackup 3.42 (NDMP) and halted session
by ilya.birman＠abnamro.com 24 Apr '02

24 Apr '02

We are seeing some strange behavior with NetBackup 3.42 (NDMP) ONTAP 6.2R1 ( and 6.1R1) and StorakeTek 9840 ( A and B) drive We run a benchmark backup on the 150GB volume and it took about 4 hours ( during which there was a continuos flow of data to the tape) Now that we scheduled a daily backup of the nightly.0 snap shot we are seeing some strange behavior. After backing up 30-60% of the data, NDMP session becomes Halted, no data is written to tape, and nothing is going on. It remains in this state for hours and then the backup is resumed. And the whole backup job can take 14-18 hours ( where it used to take 4hr) CPU utilization on Filer is at average of 4-8% ( OS is 6.2R1 and 6.1R1 on the other) Please help in explaining this behavior. We are seeing this on more then one files TIA Ilya --------------------------------------------------------------------------- This message (including any attachments) is confidential and may be privileged. If you have received it by mistake please notify the sender by return e-mail and delete this message from your system. Any unauthorized use or dissemination of this message in whole or in part is strictly prohibited. Please note that e-mails are susceptible to change. ABN AMRO Bank N.V. (including its group companies) shall not be liable for the improper or incomplete transmission of the information contained in this communication nor for any delay in its receipt or damage to your system. ABN AMRO Bank N.V. (or its group companies) does not guarantee that the integrity of this communication has been maintained nor that this communication is free of viruses, interceptions or interference. ---------------------------------------------------------------------------

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toasters April 2002