[Veritas-bu] Ethernet Bottleneck - need design suggestions
2002-12-19 22:53:55
On Wed, 18 Dec 2002, Chip Paswater wrote:
[snip]
>
> Should I turn on compression in Veritas as well as using drive compression?
> Or should I use one or the other. If so, which one? I would assume drive
> compression only, but wouldn't compression from within Netbackup give me
> compression over my already taxed ethernet link?
Nope. The only time you should use client-side compression is when you
have fast machinery and a very slow (like 10mbit or worse) network. Let
the drives do your compression - they're better at it than the backup
clients and that way your backups will have less impact on the clients
themselves. (compression is very CPU intensive)
[snip]
> Thanks Jason, this makes perfect sense. Sounds like what I need to do is
> let the e4000 drive 4 of the drives, and go out and buy a couple of dual
> proc e220's to drive the other 4 drives. These e220's would use the SSO
> drives but the e4000 would control the robot for all 8 drives.
That'll work nicely. From what I've seen the price difference between a
220R and a 420R is pretty minimal, outfitted the same, but a 220R will
handle four high speed drives quote well. Just make sure it has plenty of
RAM.
Hope this helps.
-Jason
-----
Jason K. Schechner - check out www.cauce.org and help ban spam-mail.
=The difference between genius and stupidity is that genius has bounds.=
---There is no TRUTH. There is no REALITY. There is no CONSISTENCY.---
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