the relative cost. For those periods that it is effective,
it really makes a difference too!
T.
From: Tim Cook [mailto:t...@cook.ms]
Sent: Wednesday, 26 August 2009 3:48 PM
To: Tristan Ball
Cc: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Using consumer
Here's one horror story of mine - ZFS taking over 20 minutes to flag a drive as
faulty, with the entire pool responding so slowly during those 20 minutes that
it crashed six virtual machines running off the pool:
http://www.opensolaris.org/jive/thread.jspa?messageID=369265#369265
There are some
I'm using the Caviar Green drives in a 5-disk config.
I downloaded the WDTLER utility and set all the drives to have a 7-second
timeout, like the RE series have.
WDTLER boots a small DOS app and you have to hit a key for each drive to
adjust. So this might take time for a large raidz2.
--
I've been running ZFS under FreeBSD which is experimental, and i've had
nothing but great luckso i guess it depeneds on a number of things. I
went with FreeBSD because the hardware i had wasn't supported in
solarisi expected problems but honestly, it's been rock solidit's
survived all
On Wed, 26 Aug 2009, Tristan Ball wrote:
Complete disk failures are comparatively rare, while media or transient
errors are far more common. As a media I/O or transient error on the
It seems that this assumption is is not always the case. The
expensive small-capacity SCSI/SAS enterprise
Hi Tim Cook.
If I was building my own system again, I would prefer not to go with
consumer harddrives.
I had a raidz pool containing eight drives on a snv108 system, after
rebooting, four of the eight drives was so broken they could not be
seen by format, let alone the zpool they belonged
If I was building my own system again, I would prefer not to go with consumer
harddrives.
I had a raidz pool containing eight drives on a snv108 system, after
rebooting, four of
the eight drives was so broken they could not be seen by format, let alone the
zpool they
belonged to.
This was with
But the real question is whether the enterprise drives would have
avoided your problem.
A.
--
Adam Sherman
+1.613.797.6819
On 2009-08-26, at 11:38, Troels Nørgaard Nielsen t...@t86.dk wrote:
Hi Tim Cook.
If I was building my own system again, I would prefer not to go with
consumer
On Aug 25, 2009, at 9:38 PM, Tristan Ball wrote:
What I’m worried about that time period where the pool is
resilvering to the hot spare. For example: one half of a mirror has
failed completely, and the mirror is being rebuilt onto the spare –
if I get a read error from the remaining half
On 08/25/09 10:46 PM, Tim Cook wrote:
On Wed, Aug 26, 2009 at 12:22 AM, thomas tjohnso...@gmail.com
mailto:tjohnso...@gmail.com wrote:
I'll admit, I was cheap at first and my
fileserver right now is consumer drives. nbsp;You
can bet all my future purchases will be of the
On Wed, Aug 26, 2009 at 11:45 AM, Neal Pollack neal.poll...@sun.com wrote:
Luck or design/usage ?
Let me explain; I've also had many drives fail over the last 25
years of working on computers, I.T., engineering, manufacturing,
and building my own PCs.
Drive life can be directly affected
Hi Richard,
So you have to wait for the sd (or other) driver to
timeout the request. By
default, this is on the order of minutes. Meanwhile,
ZFS is patiently awaiting a status on the request. For
enterprise class drives, there is a limited number
of retries on the disk before it reports an
On Aug 26, 2009, at 1:17 PM, thomas wrote:
Hi Richard,
So you have to wait for the sd (or other) driver to
timeout the request. By
default, this is on the order of minutes. Meanwhile,
ZFS is patiently awaiting a status on the request. For
enterprise class drives, there is a limited number
of
-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Using consumer drives in a zraid2
Are there *any* consumer drives that don't respond for a long time
trying to recover from an error? In my experience they all behave this
way which has been a nightmare on hardware raid controllers.
--
This message
On Tue, Aug 25, 2009 at 10:56 PM, Tristan Ball
tristan.b...@leica-microsystems.com wrote:
I guess it depends on whether or not you class the various Raid
Edition drives as consumer? :-)
My one concern with these RE drives is that because they will return
errors early rather than retry is
Tristan.
From: Tim Cook [mailto:t...@cook.ms]
Sent: Wednesday, 26 August 2009 2:08 PM
To: Tristan Ball
Cc: thomas; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Using consumer drives in a zraid2
On Tue, Aug 25, 2009 at 10:56 PM
On Tue, Aug 25, 2009 at 11:38 PM, Tristan Ball
tristan.b...@leica-microsystems.com wrote:
Not upset as such J
What I’m worried about that time period where the pool is resilvering to
the hot spare. For example: one half of a mirror has failed completely, and
the mirror is being rebuilt
I'll admit, I was cheap at first and my
fileserver right now is consumer drives. nbsp;You
can bet all my future purchases will be of the enterprise grade. nbsp;And
guess what... none of the drives in my array are less than 5 years old, so
even
if they did die, and I had bought the
:-) )
From: Tim Cook [mailto:t...@cook.ms]
Sent: Wednesday, 26 August 2009 3:01 PM
To: Tristan Ball
Cc: thomas; zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] Using consumer drives in a zraid2
On Tue, Aug 25, 2009 at 11:38 PM, Tristan Ball
tristan.b
On Wed, Aug 26, 2009 at 12:22 AM, thomas tjohnso...@gmail.com wrote:
I'll admit, I was cheap at first and my
fileserver right now is consumer drives. nbsp;You
can bet all my future purchases will be of the enterprise grade.
nbsp;And
guess what... none of the drives in my array are less
On Wed, Aug 26, 2009 at 12:27 AM, Tristan Ball
tristan.b...@leica-microsystems.com wrote:
The remaining drive would only have been flagged as dodgy if the bad
sectors had been found, hence my comments (and general best practice) about
data scrub’s being necessary. While I agree it’s possibly
On Aug 24, 2009, at 11:10 AM, Ron Mexico wrote:
I'm putting together a 48 bay NAS for my company [24 drives to
start]. My manager has already ordered 24 2TB [b]WD Caviar Green[/b]
consumer drives - should we send these back and order the 2TB [b]WD
RE4-GP[/b] enterprise drives instead?
I
Is there a formula to determine the optimal size of dedicated cache space for
zraid systems to improve speed?
--
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