ADSM-L

Re: anyone using ATA disk systems

2003-04-24 10:18:00
Subject: Re: anyone using ATA disk systems
From: Patrick Boutilier <boutilpj AT STAFF.EDNET.NS DOT CA>
To: ADSM-L AT VM.MARIST DOT EDU
Date: Thu, 24 Apr 2003 11:16:49 -0300
Remco Post wrote:
On Wed, 23 Apr 2003 16:06:43 -0400
"MC Matt Cooper (2838)" <Matt.Cooper AT AMGREETINGS DOT COM> wrote:


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


Hi,

if you expect to have a fairly small environment( <10 TB primairy copy
pools) I think it's a good choice to buy ATA disks arrays for primairy
storage. Prices are about $12000 for 2 TB. Remember that spinning disks do
consume power and you do want hardware support on the disk arrays.


We pay only about $8000 CDN for 2TB of RAID5 storage.


Tape solutions are easier and proably cheaper to scale, and since you'll
probably net a library adn drives anyways to handle the copy-storage pool,
you'll probably find that for larger environments, having primairy copies on
tape does make sense.

Except when you need to restore. Restore from disk is much faster than
restore from tape. :-)




--
Met vriendelijke groeten,

Remco Post

SARA - Stichting Academisch Rekencentrum Amsterdam    http://www.sara.nl
High Performance Computing  Tel. +31 20 592 8008    Fax. +31 20 668 3167

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didn't even foresee that the century was going to end." -- Douglas Adams

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