Mark,
It's actually worse than that. For a striped volume with no
fault-tolerance, the overall reliability is the product of the individual
reliability factors. For example, if you have 10 disks and each has a 99%
reliability rating, the overall reliability of a RAID-0 volume spanned
across all 10 disks is 0.99 ^ 10 = 0.9044. In other words, that RAID-0
volume is just 90% reliable.
I never use RAID-0 for anything critical. If all you want is a "big
bucket" and loss of the data isn't that big a deal, then it's a suitable
choice.
Tab Trepagnier
TSM Administrator
Laitram, L.L.C.
"Stapleton, Mark" <[EMAIL PROTECTED]>
Sent by: "ADSM: Dist Stor Manager" <[EMAIL PROTECTED]>
07/21/2004 08:41 AM
Please respond to "ADSM: Dist Stor Manager"
To: [EMAIL PROTECTED]
cc:
Subject: Re: storage pool raid 1?
From: ADSM: Dist Stor Manager [mailto:[EMAIL PROTECTED] On
Behalf Of Mike Eggleston
>Sorry about the raid1, I meant raid0 (striping). I'm on AIX 5.2.
I would *never* do just striping. There is no fault tolerance in that
case; loss of one disk means loss of all data on all disks.
--
Mark Stapleton
