We use our DataDomain systems as NFS based file devices. It works very well as
long as you keep in mind it's NFS you are dealing with.
If your TSM server is on AIX, we found that these mount options help a LOT :
combehind,biods=128,numclust=1024. AIX has some issues with high sequential
NFS workload, and these help a lot. We use to get timeouts to DD based file
vols fairly frequently and these options stopped that.
If you are running as non-root, then you need to set owner:group of the mount
point and files/dirs under it to the TSM owner:group.
Also, to access a DD from AIX you need to issue cmd: nfso -p -o
nfs_use_reserved_ports=1
Here is our /etc/filesystems entry for a DD mount point:
/DD/tsmx:
dev = "/data/col1/tsmx" (=> that's a mtree that the DD
replicates to a DR site)
vfs = nfs
nodename = isddxxxx
mount = true
options =
bg,hard,intr,sec=sys,rsize=65536,wsize=65536,proto=tcp,timeo=600,retrans=2,combehind,biods=128,numclust=1024
account = false
and from the mount cmd
isddxxxx /data/col1/tsmx /DD/tsmx nfs3 Mar 05 12:50
bg,hard,intr,sec=sys,rsize=65536,wsize=65536,proto=tcp,timeo=600,retrans=2,combehind,biods=128,numclust=1024,rw
Your devclass points to the AIX mount point. Above it is /DD/tsmx. Actually,
we put a subdir for the stgpool as in /DD/tsmx/<stgpoolname>. We also write
the db backups recovery plan to a subdir /DD/tsmx/recovery, and have a script
to copy the devconfig, scripts, crontabs, and other stuff into /DD/tsmx/config.
Rick
-----Original Message-----
From: ADSM: Dist Stor Manager [mailto:ADSM-L AT VM.MARIST DOT EDU] On Behalf Of
Tuncel Mutlu (BT Isletim ve Teknik Destek Bölümü)
Sent: Friday, April 18, 2014 9:02 AM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Using a NFS for FILE devclass
Hi, can we use a direct NFS for FILE type device class and what is the exact
syntax of the directory parameter ?
For example I can mount the NFS on my TSM AIX server
172.21.9.32:/data/col1/TSM2DB 215820.41 77422.70 65% 6 1% /TSM2DB
and then use the "/TSM2DB" as the directory and it works. Bu when I try to use
"172.21.9.32:/data/col1/TSM2DB" as the directory it is not accepted. What is
the proper syntax ? I know I can do it with CIFS shares.
Regards,
Tuncel Mutlu
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