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 … [View More]

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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/… [View More]

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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 … [View More]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. [View Less]

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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 … [View More]

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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)… [View More]

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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 … [View More]

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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 … [View More]

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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 … [View More]

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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.… [View More]

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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 … [View More]

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toasters December 2000