Hello Dan,
We have been working with netbackup client encryption and decru
encryption.
We use the netbackup encryption option without compression. So
the tape drives (lto-2 and lto-3 could not compress). I believe that the
netbackup client can also compress the data, but we have not tried this.
We found with some of the intel based systems (windows and
linux) with lots of spare cheap cpu power at the time the backups run, we did
not see a slow down. But with Unix multi use boxes we see a slow down.
With decru I believe that we saw a very small drop in thru-put
compared with the backups without the decru. But this might be because without
the decru box we tested fc tape drives attached to a netapp box. With the decru
box we had the fibre connections running thru a fibre switch and the decru box.
There a third option that we have not tried.
The latest sun/stk and ibm tape drives will do the
encryption.
We have been told that the ibm lto-4 tape drive will compress
the data then encrypt it. The compress with the lto-4
tape drive is turned off block by block if the block will grow
in size with compression. Same as the earlier lto tape drives.
You should not see any slow down with this option.
len
From:
veritas-bu-bounces AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of Cruice,
Daniel (US - Glen Mills)
Sent: Wednesday, September 05, 2007 4:33 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Tape encryption
Looking
for some information regarding tape encryption, anyone out there using
it? And if so what kind of tape degradation did you experience. We
are being asked to implement it and we are just trying to figure out what we
are going to need. Our environment is mixed with Windows and UNIX, all of
our NBU servers are Windows (Master and Media) with a 20 drive LTO3 Library,
over 900 clients. About 90% of our environment is running 6.0 MP4 and
soon will be rolling out 6.5 w/ MP1. Any gotchas we need to be aware of.
Thanks
Dan
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