ADSM-L

Re: Using Disk in place of tapes for copy pools

2002-04-12 08:10:11
Subject: Re: Using Disk in place of tapes for copy pools
From: "Coviello, Paul" <PCoviello AT CMC-NH DOT ORG>
Date: Fri, 12 Apr 2002 08:09:14 -0400
        I 've read this, with much interest since we are looking at NAS
right now in a remote building, for DR purposes for one.
        Would you know if this would be possible to do, in having the data
goto both tape and a NAS appliance offsite.

        thanks
        Paul

> -----Original Message-----
> From: Steve Harris [SMTP:STEVE_HARRIS AT HEALTH.QLD.GOV DOT AU]
> Sent: Thursday, April 11, 2002 7:25 PM
> To:   ADSM-L AT VM.MARIST DOT EDU
> Subject:      Re: Using Disk in place of tapes for copy pools
>
> 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
> ------------------------------
>
> Date:    Wed, 10 Apr 2002 12:32:20 -0400
> From:    "Patrick J. Kelleher" <Patrick_Kelleher AT SSGA DOT COM>
> Subject: Using Disk in place of tapes for copy pools
>
> We currently back up 500 GIG a night using an ATL 6000 tape library.
> Before
> replacing Tape Library we would like to research the possibility of using
> Disk in place of tape for all backups.
>
>  Anyone doing this, especially on a large scale as we have 20 terabytes in
> Tape Library.
>
> ------------------------------
>
>
>
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