On 10/8/12 10:56 AM, Toby Thain wrote:
On 08/10/12 11:43 AM, Dave McGuire wrote:
On 10/08/2012 11:09 AM, Diane Bruce wrote:
RAID !=
backup
It does not help if you have a fire. A few businesses have been lost due
to not remembering this.
RAID != backup != offsite backup!
I consider RAID as an availability measure - but how many installations
have you seen that have spare disks on-hand and procedures to monitor
and replace them? (I am sure the serious ones do. Elsewhere, every
cowboy sysadmin configures RAID on day 1... but where are the disks? :)
raises hand... I have spares as well as scripts that send me
activity, volume capacity/usage, & SMART status daily.
My bosses moan every time I order disks - why do we spend double on
storage for EVERY server???? (ZFS mirrors)
In a smallish storage environment, I've had 4 failed server disks in
3 years here, with no data loss and a total of 1 hour downtime. (ZFS,
for some reason, threw a kernel panic over one of the failed drives).
Also, I totally agree with whoever mentioned preemptively replacing
disks. At three years of 24/7 service, they get replaced. Drives are
cheap, my time and my users' data are not.
Doc