Funny you should say that. They were all ordered
together, and they all had roughly the same range of serial number too.
There was one in the batch of 4 that was far off from the other 3, that
drive failed a while ago and has since been replaced. I think it may
have been that replacement that failed on me too. Anyway, I'm really
hoping that what you said isn't the case and that mdadm just falsely
failed the other drive at the same time. I'll find out soon enough I
suppose.
Also, for the record, these are all Seagate drives. I've lately been
buying WD drives, just staying away from the JB models. Just picked up
a couple 1TB Caviar Black drives, we'll see how well they work I guess.
I think I'm about ready to back to WD and ditch Seagate completely. The
7200.9 drives were the last good ones they made in that series......
-Joe
Stephen wrote:
if they were all ordered at the same time it could be a manfactureing
defect that was in the batch (i have seen it) or they all were jarred
at the same time.. in hsipping or what have you (have seen that as
well)
without a real forensic analyses of the drive it will be hard to tell.
On Fri, Jan 9, 2009 at 3:10 PM, Joe Fleming <
joe@selectitaly.com> wrote:
Yeah, I know heat is usually the main killer. I have a couple fans mounted
in front of the drives and they run really cool (though I've read that
running too cool can also kill them..... and there's the whole dust argument
too, but they stay pretty clean). I'd run a true RAID card, but I've always
had good luck with software RAID in the past so I figured I'd just let it
roll. I already had a drive to use as a replacement I bought when I replaced
another failed drive in the same array (that was one of the 5 in the last
year). I know from the noises that 1 of the drives was going to fail (hence
the backing up), I just didn't expect 2 to fail.... and at EXACTLY the same
time.
The thing that annoys me is that these drives are barely a year old, I've
already had 1 failure and now I have at least 1 more if not 2. Sure these
aren't enterprise drives, but I used to be able to run consumer drives for
years before I had any problems (still have some old 80GB drives around that
are still chugging along without problem). Why do all of these new drives
fail so far ahead of their warranty time?!
-Joe
Lisa Kachold wrote:
HEAT is the most devastating culprit to drives, other than extensive
read/writes, and power sparks, as Eric suggested below.
I suggest you order a nice controller card. 3Ware.com has cheap ones. You
can even do terabyte RAID for say a nice GreenPlum cluster in an old
AmericanMicro.com 4 U server with 8 drives!
LVM over hardware RAID is a fine solution, especially with good conditioning
and temperature protections.
You just pop out the drive (RAID 1+0 [disk is cheap]) and replace and
rebuild hot.
www.Obnosis.com |
http://wiki.obnosis.com |
http://hackfest.obnosis.com
(503)754-4452
________________________________
January PLUG HackFest = Kristy Westphal, AZ Department of Economic Security
Forensics @ UAT 1/10/09 12-3PM
________________________________
Date: Fri, 9 Jan 2009 14:30:27 -0700
From:
eric.cope@gmail.com
To:
plug-discuss@lists.plug.phoenix.az.us
Subject: Re: Softraid Multi-dirve Failure
This is more in regards to your last paragraph. Where are you storing your
hard drives? What type of environment are they subjected to?
On Fri, Jan 9, 2009 at 2:25 PM, Joe Fleming <
joe@selectitaly.com> wrote:
Hey all, I have a Debian box that was acting as a 4 drive RAID-5 mdadm
softraid server. I heard one of the drives making strange noises but mdstat
reported no problems with any of the drives. I decided to copy the data off
the array so I had a backup before I tried to figure out which drive it was.
Unfortunately, in the middle of copying said data, 2 of the drives dropped
out at the same time. Since RAID-5 is only tolerant to one failure at a
time, basically the whole array is hosed now. I've had drives drop out on me
before, but never 2 at once. Sigh.
I tried to Google a little about dealing with multi-drive failures with
mdadm, but I couldn't find much in my initial looking. I'm going to keep
digging, but I thought I'd post a question to the group and see what
happens. So, is there a way to tell mdadm to "unmark" one of the 2 drives as
failed and try to bring up the array again WITHOUT rebuilding it? I really
don't think both of the drives failed on me simultaneously and I'd like to
try to return 1 of the 2 to the array and test my theory. If I can get the
array back up, I can either keep trying to copy data off it or add a new
replacement and try to rebuild. I'm pretty novice with mdadm thought I don't
see an option that will let me do what I want. Can anyone offer me some
advice or point me in the right direction..... or am I just SOL?
As a side note, why can't hard drive manufacturers make drives that last
anymore? I've had like 5 drives fail on me in the last year... WD, Seagate,
Hitachi, they all suck equally! I can't find any that last for any
reasonable amount of time, and all the warranties leave you with reman'd
drives which fail even more rapidly, some even show up DOA. Plus, I'm not
sending my unencrypted data off to some random place! Sorry for venting,
just a little ticked off at all of this. Thanks in advance for any help.
-Joe
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