ADSM-L

Re: anyone using ATA disk systems

2003-04-24 09:28:48
Subject: Re: anyone using ATA disk systems
From: Marc Levitan <marc.levitan AT PFPC DOT COM>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 24 Apr 2003 09:26:20 -0400
I would be interested in the specs!

marc.levitan AT pfpc DOT com

Thanks,
Marc Levitan
Storage Management Specialist
PFPC Global Funds Services



                    "ADSM: Dist
                    Stor Manager"        To:     ADSM-L AT VM.MARIST DOT EDU
                    <ADSM-L AT VM DOT MA        cc:
                    RIST.EDU>            Subject:     Re: anyone using ATA disk 
systems

                    04/24/2003
                    09:24 AM
                    Please
                    respond to
                    "ADSM: Dist
                    Stor Manager"





We have been using 3ware IDE RAID for almost six months now.  Our primary
TSM server (Win2k, TSM v5.1.5.4) has local attached SCSI RAID.  The IDE
RAID
is installed as a second sever, and we access it via network file shares
with FILE storage pools.  On the Windows platform there is one problem
though.  When the 3ware card is configured as RAID5 the performance is
unusable, but with it configured as RAID1 it is acceptable.  APAR IC34562
was the result of working with TSM support, and I am told it will be
available in TSM 5.2.

In the mean time we are using RAID1 and are very pleased with the results,
but plan on migrating all the storage to RAID5 once a fix is available.
Currently we have about 22 nodes that backup directly into IDE RAID, and
around a thousand that backup to local disk storage pools which migrate to
IDE RAID storage.

We currently have three of these IDE RAID servers in use across two
TSM/ADSM
systems.  The most recent server we built was a 3.5TB (at RAID5) server,
and
it cost around $13,500.  I can share the specs if anyone is interested.

Colby



-----Original Message-----
From: MC Matt Cooper (2838) [mailto:Matt.Cooper AT AMGREETINGS DOT COM]
Sent: Wednesday, April 23, 2003 3:07 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: anyone using ATA disk systems


Hello all,
I am doing some what if research and I keep hearing that relatively cheap
ATA disk systems are RAID-5 and a good alternative to a local tape copy.
I
was wondering if anyone has done this or can give truly educated comment on
it.   I don't know if it would be a good fit for streaming 20 backups at so
it may be better as a second level disk pool.   Please share your knowledge
of this area...
Matt

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