[HPADM] SUMMARY:# of LTO2 drives per 2gb HBA
- From: "Scalone, Galen" <Galen.Scalone@xxxxxxxxxxxxxxxx>
- Date: Wed, 28 Jun 2006 13:03:06 -0400
Great list....
Thanks to Mike Lavery, Dan Zucker, Jim Turner, James Perry, and John
Adams, and Tom Meyers.
Many different responses, depending on the backup server/network/number
of drives.
It seems best practices would be no more than 2, depending on network
speed, backup server...
From Mike L.:
Hi,
A 2GB FC should achieve about 160MB/s sustained.
Based on this, 1 x LTO3 drive transferring at 2:1 compression achieves
160mb/s which would saturate the link. Ideally, can you get the data off
the disks at that rate too?.
LTO2 is based on 60MB/s 2:1 compression so you should be happy with 2
drives per hba.
LTO3 should be one, however will you ever achieve those transfer rates?.
Probably not.
-----Original Message-----
From: hpux-admin-owner@xxxxxxxxxxxxx
[mailto:hpux-admin-owner@xxxxxxxxxxxxx] On Behalf Of Scalone, Galen
Sent: Wednesday, June 28, 2006 11:42 AM
To: hpux-admin@xxxxxxxxxxxxx
Subject: [HPADM] # of LTO2 drives per 2gb HBA
List -
Does anyone have a "Best Practices" on the number of LTO2, and
for that matter, LTO3 drives, that one would hang off on one HBA, in a 2
gb switched fabric?
Galen
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