Ty,

I think you are on the right track looking at block sizing.  Here are some 
ideas of where to look, but if it ends up you need to have different block 
sizes on different devices, I don't know how to set that up, but perhaps 
somebody else here does.

Load one of your backup tapes into the SDLT320 drives
        nsrjb -ln -S [slot number] -f /dev/rmt/[device name]

Use scanner to give you the block size it sees on the tape
        scanner -v /dev/rmt/[device name]

Unload the tape
        nsrjb -u -S [slot number] -f /dev/rmt/[device name]

Now look in nwadmin - Media - Devices - your SDLT320 drive - view details 
- 
look for Volume block size.  See if this is different than what is 
reported from scanner - if that is the case, we'll have to figure out how 
to change it - but not change the block size for your other tape drives.



Legato NetWorker discussion <NETWORKER AT LISTSERV.TEMPLE DOT EDU> wrote on 
05/18/2006 12:01:26 AM:

> All,
> 
> I just made the cut-over from a SCSI-attached L180 (4 x SDLT320) library
> connected to a Solaris 8 host, to a FC-attached L500 (4 x LTO3) into 2 x
> T2000 hosts.
> 
> I now want to continue using my L180 as a "read-only" library for all my
> old tapes, so I hooked into an available Dell PowerVault 35F FC-SCSI 
bridge
> and then hooked the bridge into my Brocade 4100 switch (into which all 
the
> other devices and HBAs are attached.)
> 
> After zoning the bridge to one of my HBAs, I can see all four SDLT 
drives
> and the changer works just fine, but reading any of my old SDLT tapes
> results in block size errors and the inability to successfully restore
> data.    Here's an example:
> 
---snip---




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