* Will RAID have issues with disks that spin down?
@ 2012-10-04 14:36 Ken D'Ambrosio
2012-10-04 14:49 ` Hugo Mills
2012-10-09 8:07 ` Bart Noordervliet
0 siblings, 2 replies; 3+ messages in thread
From: Ken D'Ambrosio @ 2012-10-04 14:36 UTC (permalink / raw)
To: linux-btrfs
Hi. I know that several hardware RAID solutions have issues with disks
that spin down when idle; the time to spin back up -- usually on the
order of five seconds -- causes unhappy timeouts, etc. I was wondering
if that would be an issue with RAID a-la btrfs?
Thanks,
-Ken
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Will RAID have issues with disks that spin down?
2012-10-04 14:36 Will RAID have issues with disks that spin down? Ken D'Ambrosio
@ 2012-10-04 14:49 ` Hugo Mills
2012-10-09 8:07 ` Bart Noordervliet
1 sibling, 0 replies; 3+ messages in thread
From: Hugo Mills @ 2012-10-04 14:49 UTC (permalink / raw)
To: Ken D'Ambrosio; +Cc: linux-btrfs
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On Thu, Oct 04, 2012 at 10:36:43AM -0400, Ken D'Ambrosio wrote:
> Hi. I know that several hardware RAID solutions have issues with
> disks that spin down when idle; the time to spin back up -- usually
> on the order of five seconds -- causes unhappy timeouts, etc. I was
> wondering if that would be an issue with RAID a-la btrfs?
I have (some of(*)) the disks in my 8-drive RAID-1 btrfs array set
to spin down after 10 minutes of no use. I've not had a problem with
it so far. So I'd say it's not an issue from my limited testing.
Hugo.
(*) Damn you, Samsung!
--
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: Will RAID have issues with disks that spin down?
2012-10-04 14:36 Will RAID have issues with disks that spin down? Ken D'Ambrosio
2012-10-04 14:49 ` Hugo Mills
@ 2012-10-09 8:07 ` Bart Noordervliet
1 sibling, 0 replies; 3+ messages in thread
From: Bart Noordervliet @ 2012-10-09 8:07 UTC (permalink / raw)
To: Ken D'Ambrosio; +Cc: linux-btrfs
On Thu, Oct 4, 2012 at 4:36 PM, Ken D'Ambrosio <ken@jots.org> wrote:
> Hi. I know that several hardware RAID solutions have issues with disks that
> spin down when idle; the time to spin back up -- usually on the order of
> five seconds -- causes unhappy timeouts, etc. I was wondering if that would
> be an issue with RAID a-la btrfs?
I run btrfs on my home server with the disks set to spin down when
idle. One of them (a Samsung 1TB) takes a whopping 10 seconds to spin
up, but btrfs has no problem with that whatsoever.
Regards,
Bart
^ permalink raw reply [flat|nested] 3+ messages in thread
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2012-10-04 14:36 Will RAID have issues with disks that spin down? Ken D'Ambrosio
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2012-10-09 8:07 ` Bart Noordervliet
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