We mainly use the Hitachi as a staging area. We create three copies of
all images and don't have enough hours in the night to do all backups,
so the disk is used to create images that are then twinned to tape
during the day. We do keep about 15TB of differentials on the disk
permanently. So our justification was to be able to complete backups
during the backup window, not reduction of tape. Bill
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of David
Turner
Sent: Thursday, July 17, 2003 12:09 PM
To: 'William H Blandy'; 'Huslage Aaron S - CNF'; 'David Ashamalla';
'jjkdec'; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Using cheap ATA disk for virtual tape
I just got management to sign off on a Netapp 940 for the same reason,
justifying the cost by showing how Backup to disk will reduce the number
of tapes I have to purchase. I plan to dump my incremental to disk and
later on adding some of my Full backups. Hopefully I will only use my
L180 Tape library for Duplicates only...any thoughts or suggestions are
welcome.
-----Original Message-----
From: William H Blandy [mailto:william_h_blandy AT fanniemae DOT com]
Sent: Tuesday, July 15, 2003 7:43 AM
To: 'Huslage Aaron S - CNF'; 'David Ashamalla'; 'jjkdec';
veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Using cheap ATA disk for virtual tape
We are using about 40TB of Hitachi FC disk. We do about 250TB of
backups a week, we need the speed that FC and the faster disks give us.
Bill Blandy
-----Original Message-----
From: veritas-bu-admin AT mailman.eng.auburn DOT edu
[mailto:veritas-bu-admin AT mailman.eng.auburn DOT edu] On Behalf Of Huslage,
Aaron S - CNF
Sent: Monday, July 14, 2003 12:52 PM
To: 'David Ashamalla'; 'jjkdec'; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Using cheap ATA disk for virtual tape
I'm also working on a similar project. We do about 8 TB a week of
backups, so we're looking at getting a 24TB NearStore R150 from NetApp
or an EMC cx600 w/ATA drives.
Any thoughts on either of these boxes? Any alternatives I should be
looking at?
-----Original Message-----
From: David Ashamalla [mailto:davida AT telephia DOT com]
Sent: Monday, July 14, 2003 8:08 AM
To: 'jjkdec'; veritas-bu AT mailman.eng.auburn DOT edu
Subject: RE: [Veritas-bu] Using cheap ATA disk for virtual tape
We are using an Arena Indy 2600, which gives 1.6TB for about $12k. While
the box has been very reliable, I could not get the monitoring ethernet
port to work, and would not buy another one. I am looking at a Nexsan
box, which costs
about the same, and seems to solve my problems.
We are using this for most of our incremental backups, and some of our
weekly fulls (where monthlies go offsite).
D
-----Original Message-----
From: jjkdec [mailto:jjkdec AT comcast DOT net]
Sent: Friday, July 11, 2003 9:05 PM
To: veritas-bu AT mailman.eng.auburn DOT edu
Subject: [Veritas-bu] Using cheap ATA disk for virtual tape
I am looking at using cheaper ATA disk drives for a staging area for
my backups. I am at a point were I need to by more tape drives or
implement a disk storage unit. The systems that I have been looking
at are STK bladestore and Quantum DX30. My company has a few remote
sites for which the backup performance would increase if it were to go
to disk first instead of tape. I would appreciate any discussion
concerning using ATA disk drives.
Thanks
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