On Thu, Oct 4, 2012 at 8:01 PM, Paul Robert Marino wrote:
> This is actually fairly common with megaraid arrays esspecialy the ones
> oemed by dell because they tend to rush them to market before they have
Megaraid has *consistently* been a source of serious problems,
requiring firmware updates,
Similar findings here, where the first batch of drives in our hadoop
clusters were WD greens. smartctl shows huge Load_Cycle_Count numbers
for those drives which have been in service for a while (and they do
indeed keep us busy with RMAs). Eventually we found this utility which
can disable the absu
rom: owner-scientific-linux-us...@listserv.fnal.gov
[mailto:owner-scientific-linux-us...@listserv.fnal.gov] On Behalf Of Doug
Johnson
Sent: Thursday, October 04, 2012 1:07 PM
To: Steven Timm
Cc: Ken Teh; scientific-linux-users
Subject: Re: disk recommendations
Greetings,
I have built many RAID systems usi
Greetings,
I have built many RAID systems using desktop disks and they are
generally quite stable. One of the issues with WD drives are with their
Green drives. By default, they park the heads after ~8 seconds of
inactivity. This will cause them to drop out of the array. The disk
firmware can be c
My understanding is that the main difference between desktop drives
and enterprise raid array drives in this regard is that the drive firmware
is configured to retry errors a lot longer on the desktop drives.
It is also my experience, although it was a few years ago on older
model WD drives, that
I've run into problems trying to use desktop disks in a RAID array with a
MegaRAID 9260-8i. I built 2 previous systems with desktop disks and did not
have any problems but I've been unable to get this 3rd system to function
stably. Disks dropped from the array except the disks are fine which
