topic Re: multiple ignite tapes in Operating System - HP-UX

multiple ignite tapes

Jay Cantwell — Wed, 12 Jan 2005 08:12:57 GMT

I am using make_tape_recovery for an rp2470 system using hpux 11.11 and ignite version 109. The archive is using 2 tapes. Is this going to cause a problem during a recovery ?

thanks...Jay

Re: multiple ignite tapes

Pete Randall — Wed, 12 Jan 2005 08:15:32 GMT

I've never had one extend to multiple tapes before, but I doubt it should be a problem. It's a simple tar archive - it should be able to handle the second tape.

Pete

Re: multiple ignite tapes

Steven E. Protter — Wed, 12 Jan 2005 08:50:19 GMT

It should not have trouble. I'm incomfortable because if two tapes are going to not be together when you need them, it will happen at the most inconvenient time.

I used this issue to successfully advocate higher capacity tape drives.

SEP

Re: multiple ignite tapes

Patrick Wallek — Wed, 12 Jan 2005 08:51:43 GMT

I have had Ignite make_tape_recovery tapes that spaneed 2 tapes. I haven't had any problems with those yet.

As Pete said, it is essentially a tar archive, so you will be prompted to insert the 2nd tape when you are doing your recovery.

Re: multiple ignite tapes

Sunil Sharma_1 — Wed, 12 Jan 2005 08:52:38 GMT

shouldn't be any problem . What is you tape/dat drive model and how much data you have in root volume group vg00 ?

Sunil

Re: multiple ignite tapes

Jay Cantwell — Wed, 12 Jan 2005 08:54:30 GMT

Sunil....vg00 is approx 9GB. I am using a DAT24 tape drive.

Re: multiple ignite tapes

Sunil Sharma_1 — Wed, 12 Jan 2005 08:57:43 GMT

jay,

what command do you use to take ignite. If you take only vg00 on ignite backup it should not go for another tape ?

should use

#make_tape_recovery -A -f /dev/rmt/0mn

this should be good enoough to take your root vg backup on single tape.

Sunil

Re: multiple ignite tapes

Patrick Wallek — Wed, 12 Jan 2005 08:59:42 GMT

What type of tape are you using in that drive? I believe that is a DDS3 tape drive which should give you 12GB native capacity on a DDS3 tape.

If you are using a DDS2 tape (4GB native capacity, I believe) then you would be more likely to span 2 tapes.

If going to 2 tapes causes a concern, just get the highest capacity tapes that the tape drive can use. In this case DDS3.

Re: multiple ignite tapes

Ionut Grigorescu_2 — Thu, 13 Jan 2005 02:12:31 GMT

Hi,

maybe you are using make_tape_recovery to include also your vg01 on your tape, not only vg00. I have never did Ignite tapes on 2 volumes because of that incomfortable feeling mentioned above. Try also using a DDS3 tape in a DDS3 drive or DDS4 in a DDS4 drive if this is the case...

regards,
john