Andy Gajetzki wrote:
Hi there, I recently had a disk go bad in a linear RAID built with
mdadm. The particular disk that failed was the last device of the
RAID. I am curious about how devices are utilized in a linear RAID.
Would the md be filled sequentially from device 1 upto 5? In other
On Saturday January 21, [EMAIL PROTECTED] wrote:
Hi there, I recently had a disk go bad in a linear RAID built with
mdadm. The particular disk that failed was the last device of the
RAID. I am curious about how devices are utilized in a linear RAID.
Would the md be filled sequentially from
Thanks for the help. I used ddrescue to grab /dev/hdb and am now using
e2retrieve. I am somewhat optimistic that there will be at least
partial recovery ;). Have a great remainder of the weekend,
Andy Gajetzki
On 1/21/06, David Greaves [EMAIL PROTECTED] wrote:
Andy Gajetzki wrote:
Hi there, I
On Sat, 21 Jan 2006, Gerd Knops wrote:
Hi,
I have a RAID5 setup with 3 250GB SATA disks. Often the RAID is not
accessed for days, so I wonder if I can extend the life of the disks
by spinning them down, eg by setting the spindown timeout for the
drives with hdparm -S nn.
The hdparm man
Jeff Breidenbach (jeff@jab.org) wrote on 17 January 2006 00:45:
Is this a real issue or ignorable Sun propoganda?
-Original Message-
From: I-Gene Leong
Subject: RE: [colo] OT: Server Hardware Recommendations
Date: Mon, 16 Jan 2006 14:10:33 -0800
There was an interesting blog
Neil Brown ([EMAIL PROTECTED]) wrote on 18 January 2006 09:47:
On Tuesday January 17, [EMAIL PROTECTED] wrote:
Neil Brown wrote:
In general, I think increasing the connection between the filesystem
and the volume manager/virtual storage is a good idea.
Well, I agree in principle however
Mark Hahn wrote:
you seem to be assuming that the drives have a lifespan measured in
hours-spinning. that's not at all clear. for instance, drives
are typically rated 40-50K start-stop cycles, which is ~40/day
over a 3-year service life.
you clearly do not want to auto-spindown unless you
I recently extended my raid array with a 9th drive, and I find that the
300 watt PSU I use is insufficient to start the system. What happens is
that I activate the machine, the machine starts powering up for 3
seconds orso (spinning all the hard drives up about half way) then power
cuts out.
NeilBrown [EMAIL PROTECTED] wrote:
In line with the principle of release early, following are 5 patches
against md in 2.6.latest which implement reshaping of a raid5 array.
By this I mean adding 1 or more drives to the array and then re-laying
out all of the data.
I've been looking forward to
of my drives at the moment are below 10 start-stop cycles, even though
the array is only used very lightly for a few hours every day.
but my point was that very lightly doesn't tell you how many start/stop
cycles. if the spindown timeout is less than ~10 minutes, you _could_
hit 50K cycles
During a start and stop the disk's heads touch the surface.
At speed the heads glide on a cushion of air, and don't touch the surface.
AFAIK, the heads and surface don't wear while in use.
Also, if disks are anything like light bulbs, they will fail during start.
I have never seen a light bulb
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