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Date:	Fri, 25 Mar 2005 20:53:50 PST8
From:	Steve Carter <scarter@vcnet.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: re: Howto RAID?

Content Type: text/plain

Tom:

For many workstations, where the storage capacity and throughput (speed)
of one drive can be adequate, RAID 1 might be a good choice. If you
lose a drive, you simply use the backup. replace the drive. No rebuild
is necessary, just a copy to the replacement disk. RAID 1 is pretty simple.

RAID 5 controllers are expensive, and you need more drives. Total
storage is higher (more drives) and throughput is higher also.
Adaptec and LSI Logic both make RAID controllers, among others
(even IBM).

Although you specified SCSI, one low-cost approach I'm considering
(and I'm a certified/certifiable SCSI bigot!) for my next machine
is an IDE RAID controller. Many of the features once unique to SCSI
have worked filtered down to the [E}IDE/SATA world and the demands
of my "workstation" are not very high.

There's a nice, brief discussion of the various RAID levels at:

http://www.acnc.com/raid.html

(But I know nothing about their hardware.)

Their recommended applications for RAID 1 seem closer to mine.

-- Steve

++++++++++++++++++++++
On 3/25/05, Tom Brown wrote, in part:
>Does anyone have any pointers on implementing RAID on eCS?
>I am probably most interested in RAID5 using SCSI drives,
>although I am quite willing to be educated on other options.
>I HAVE read about the various levels of RAID, so I at least
>have some understanding about the subject.
>
>I guess I am most interested in RAID-5 which I believe would
>protect me against losing a single drive.
>
>Software (probably not)? Hardware?
>RAID capable SCSI HAB vs external RAID box?
>
>Thanks!
>
>Tom Brown
>=====================================================
>

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