ADSM-L

Re: [ADSM-L] ?how to force NDMP LAN-free backups to fill one tape before writing on another?

2008-11-13 23:53:40
Subject: Re: [ADSM-L] ?how to force NDMP LAN-free backups to fill one tape before writing on another?
From: "Gee, Norman" <Norman.Gee AT LC.CA DOT GOV>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 13 Nov 2008 20:52:29 -0800
Did you backup each filespace sequentially or all at once?

I.E.

serial
backup node nas /fs1 mode=full wait=yes
backup node nas /fs2 mode=full wait=yes
backup node nas /fs3 mode=full wait=yes
backup node nas /fs4 mode=full wait=yes 
backup node nas /fs5 mode=full wait=yes
backup node nas /fs6 mode=full wait=yes
backup node nas /fs7 mode=full wait=yes
backup node nas /fs8 mode=full wait=yes 
backup node nas /fs9 mode=full wait=yes
backup node nas /fs10 mode=full wait=yes
backup node nas /fs11 mode=full wait=yes
backup node nas /fs12 mode=full wait=yes 
backup node nas /fs13 mode=full wait=yes
backup node nas /fs14 mode=full wait=yes
backup node nas /fs15 mode=full wait=yes
backup node nas /fs16 mode=full wait=yes 

-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
James R Owen
Sent: Thursday, November 13, 2008 5:48 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: ?how to force NDMP LAN-free backups to fill one tape before
writing on another?

I am trying to force NDMP LAN-free backups to keep the same tape mounted
and serially reuse it when a NetApp filer needs to write multiple
backups.

We have just implemented our first NDMP LAN-free backups w/ TSM
v5.5.1.1,
w/ a single NetApp filer backing up 16 VirtualFS from nightly snapshots,
e.g.,
DEFine VIRTUALFSmapping netapp-01 /x.snap /vol/volx /.snapshot/nightly.0

I was disappointed to find that DEVType=NAS requires MOUNTRetention=0:
e.g.,
DEFine DEVclass LTO3N LIBRary=bec3584 DEVType=NAS ESTCAPacity=800G -
 MOUNTRetention=0 MOUNTWait=5
[that forces a tape dismount after each NDMP backup, right?]

We use LTO1 scratch tapes in our 3584 library so I defined 10 * LTO3
volumes into our new BackupL3N STGpool:

DEFine STGpool BackupL3N LTO3N POoltype=PRimary DATAFOrmat=NETAPPDump -
 COLlocate=Group [=default setting] MAXSCRatch=0

The filer wrote NDMP backups on all 10 tapes, so I did MOVE DATA's to
collocate all of the backups back onto a single tape and tried:

UPDate STGpool BackupL3N COLlocate=Node

Same results:  NDMP backups on all 10 tapes again!

Help?  [or is that just how NDMP backups work?]
--
Jim.Owen AT Yale DOT Edu   (203.432.6693)

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