RE: Healthy (At Risk) Drives

Date : Mon, 31 Oct 2005 14:31:09 -0700
To : <DS(at)Softimage.COM>
From : "Chasteen, Howard" <Howard.Chasteen(at)fotf.org>
Subject : RE: Healthy (At Risk) Drives
No.

What position you store them should not be critical as long a s handled
gently. It just sounds as if you have a dying drive. Are you marking
them to keep track of which drive wigs out?

H

-----Original Message-----
From: owner-ds(at)Softimage.COM [mailto:owner-ds(at)Softimage.COM] On Behalf
Of Phil Mastman
Sent: Monday, October 31, 2005 2:01 PM
To: DS List
Subject: Re: Healthy (At Risk) Drives

Howard asks...

> When you swap the drives are you changing the mechanical orientation
of
> the drives  i.e. is one drive array mounted horizontal and the other
> vertical for instance? That can cause drives with high hours not to
spin
> up as readily. 

All of the drives are mounted in an Avid MediaDock with eight slots,
stacked
vertically.  The drives sit horizontally when they are in the dock, but
they
are stored in a foam lined case, oriented vertically when they are not
being
used?  Could this be a factor?

And from Neal,

>If you can prove that it is a particular
> drive I would persue getting that drive replaced. (One of the motors
in the
> drive may have a sticky spot and require a reseat to jog it free.)

Is there an easy way to tell which drive is not mounting when only 7
come
up?  I have the drives numbered, so they always go into the same slot in
the
Mediadock.

> In my experience with the MediaDaock LVD it needs a good long spin up
time in
> order for all drives to have sufficient time to spin up. The drives
are spun
> up based on the their slot position and the lower slots will take
longer than
> the upper. 

That may be part of the problem... I can get kind of impatient to get
right
to work sometimes...

> Another cause is that one of the drives is simply taking longer than
its
> colleagues to spin up because it is beginning to fail. This is a
really hard
> one to diagnose since this may be the only symptom right now. However
this
> kind of problem has a really nasty habit of getting worse very
quickly. ASM
> might show this drive as having errors although you are probably going
to have
> to invest the time and aggrevation in breaking the stripe group
concerned and
> doing a thorough destructive

Sounds like I should definitely do the read/write test, as soon as I can
get
the media off the drives.

I'll get the torch out and look for the offensive bunnies.  You did mean
oxy-acetylene didn't you? Or was that propane?   :-)

Thanks, gentlemen, for all of your assistance.

--Phil


Phil Mastman
Sandlot Pictures, Inc.

http://www.sandlotpictures.com/phil.html



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