ADSM-L

Re: Using Disk in place of tapes for copy pools

2002-04-11 19:24:23
Subject: Re: Using Disk in place of tapes for copy pools
From: Steve Harris <STEVE_HARRIS AT HEALTH.QLD.GOV DOT AU>
Date: Fri, 12 Apr 2002 09:24:37 +1000
Can we have some details of your disk vendor and model?
How has reliability been? Any disk failures?

I have an IBM ESS here, but that is too expensive to waste on very large disk 
pools.

Thanks

Steve Harris
AIX and TSM Admin
Queensland Health, Brisbane Australia

>>> johnunderdown AT STI.SYNOVUS DOT COM 11/04/2002 22:48:27 >>>
Pat,

We been using a all disk backuppool for a number of years now. It's grown to 
3TB (4 expansion cabinets with 14 73GB drives each and each set to raid 5), we 
just keep adding disk expansion to server as we need more storage. We use a 
small LTO library for the copypool. We backup 360 servers (80 to 100 GB total) 
nightly and growing. The TSM database is 10GB sitting on raid 10 with 15K rpm 
drives (very fast) , i also defrag the DB monthly. This is a dream setup and 
works very well, restores run in the blink of a eye. I run the TSM server  by 
myself as a part-time duty.

I would suggest just growing your disks storage on your backuppool to at least 
1 TB to keep backups and restore running fast, allowing older data to migrate 
to your existing tape library. Now a days disks have both a performance and 
price advantage over tape.

If you have any other question please let me know.

john
Synovus
Columbus, GA