Re: raid - final leat expensive config confirm
- From: "Tim" <Tim@NoSpam>
- Date: Wed, 22 Jun 2005 16:19:42 +1200
Greg,
Just before you get in deep with this, there are a few important things to
note about RAID 1:
* RAID 1 is no substitute for having backups - it protects against single
drive failures in common scenarios, it does *not* protect against user
error, software error, catastrophic system error, controller error, power
failure and so on.
* Monitor your RAID 1 System. Everyday check to see if both drives in the
RAID are OK. The adaptec RAID controller doesn't shout quite as loud as
others when there is a drive failure, unless you configure alerts with it
(even then I am not too sure if you can on the lower cost controllers).
If you keep the above things in mind then you will have a more reliable
system. If you ignore a drive failure or just don't notice it because it did
not popup and hit you in the head, then you are back to No RAID and
potential system loss.
RAID drives do fail. It does happen that more than 1 drive can fail in quick
succession so if / when a drive fails, it should be fixed promptly.
I am not trying to scare you, it is just that I have seen several RAID
systems that were useless due to failed drives and were highly vulnerable
due to inadequate backups.
It is well worth the effort when setting up a RAID system to learn what
happens and how you find out what to do when a drive fails. If you can,
configure a RAID 1 volume (don't do anything else with it at all other than
maybe formating it in Windows and assigning a drive letter maybe put a copy
of some throw away data on it), then shutdown, power off, pull out the power
and interface cable to one of the drives and restart. See what happens when
you restart - how do you know that you know have a Broken RAID? Shutdown,
power off, plug the drive back in and restart - what happens? How do you fix
it? If you learn this now, you will not panick so much when a drive actually
fails later.
HTH
- Tim
"greg" <gregl@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:uT2CA3ecFHA.2768@xxxxxxxxxxxxxxxxxxxxxxx
> Bob
>
> thanks a lot
> it is incredible i spent an hour with dell chat support and they know
> NOTHING
> I mean is this question really that exotic
> And to Adaptec is is impossible to get thru
> and their web site asks to download JVM before sending simple
> question!!!!!
>
>
> the overall price tag 160!!!!
>
> On ebuyer.com
>
> ADAPTEC ATA RAID 1200A PCI Card RAID 0,1 - $52
>
> Seagate Barracuda 7200 80GB Hard Drive-ata/100 8.5ms - 54*2 = $108
>
> Bob final question: so all the power and info those hard drives will get
> from those
> 80 cables?
>
> I mean this is not IDE so that cable (for two drives I have now ) I will
> not
> touch right?
>
>
.
- References:
- raid - final leat expensive config confirm
- From: greg
- raid - final leat expensive config confirm
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