On 8/15/11 12:50 PM, David Magda wrote:
On Mon, August 15, 2011 12:25, Ray Van Dolson wrote:
On the Intel SSD 320 Series, the spare capacity reserved at the
factory is 7% to 11% (depending on the SKU) of the full NAND
capacity. For better random write performance and endurance, the
On Mon, Aug 15, 2011 at 01:38:36PM -0700, Brandon High wrote:
On Thu, Aug 11, 2011 at 1:00 PM, Ray Van Dolson rvandol...@esri.com wrote:
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by
Over provisioning does not directly increase flash performance, but allows
for greater reliability as the drive ages by improving garbage collection
efforts and reducing write amplification. This article doesn't provide any
sources, but it explains the concept at a very basic level -
On Fri, Aug 12, 2011 at 06:53:22PM -0700, Edward Ned Harvey wrote:
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Ray Van Dolson
For ZIL, I
suppose we could get the 300GB drive and overcommit to 95%!
What kind of benefit does that
On Aug 11, 2011, at 1:16 PM, Ray Van Dolson wrote:
On Thu, Aug 11, 2011 at 01:10:07PM -0700, Ian Collins wrote:
On 08/12/11 08:00 AM, Ray Van Dolson wrote:
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
On Mon, August 15, 2011 12:25, Ray Van Dolson wrote:
Perhaps this is it. Pulled the recommendation from Intel's Solid-State
Drive 320 Series in Server Storage Applications whitepaper.
Section 4.1:
[...]
On the Intel SSD 320 Series, the spare capacity reserved at the
factory is 7% to
On Thu, Aug 11, 2011 at 1:00 PM, Ray Van Dolson rvandol...@esri.com wrote:
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by increasing the overprovisioning to 20% (dropping
usable capacity to
On Mon, Aug 15, 2011 at 01:38:36PM -0700, Brandon High wrote:
On Thu, Aug 11, 2011 at 1:00 PM, Ray Van Dolson rvandol...@esri.com wrote:
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by
From: Ray Van Dolson [mailto:rvandol...@esri.com]
Sent: Monday, August 15, 2011 12:26 PM
On the Intel SSD 320 Series, the spare capacity reserved at the
factory is 7% to 11% (depending on the SKU) of the full NAND
capacity. For better random write performance and endurance, the
From: Ian Collins [mailto:i...@ianshome.com]
Sent: Friday, August 12, 2011 11:24 PM
For ZIL, I
suppose we could get the 300GB drive and overcommit to 95%!
What kind of benefit does that offer? I suppose, if you have a 300G
drive
and the OS can only see 30G of it, then the drive can
On 08/14/11 12:51 AM, Edward Ned Harvey wrote:
From: Ian Collins [mailto:i...@ianshome.com]
Have you already tested it? Anybody? Or is it still just theoretical
performance enhancement, compared to using a normal sized drive in a
normal mode?
How would you test it? I guess you would need
Which 320 series drive are you targeting, specifically? The ~$100 80GB variant
should perform as well as the more expensive versions if your workload is more
random from what I've seen/read.
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On Thu, Aug 11, 2011 at 09:17:38PM -0700, Cooper Hubbell wrote:
Which 320 series drive are you targeting, specifically? The ~$100
80GB variant should perform as well as the more expensive versions if
your workload is more random from what I've seen/read.
ESX NFS-attached datastore activity.
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by increasing the overprovisioning to 20% (dropping
usable capacity to 80%).
Anyone have experience with this?
Ray
On 08/12/11 08:00 AM, Ray Van Dolson wrote:
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by increasing the overprovisioning to 20% (dropping
usable capacity to 80%).
A log device doesn't
On Thu, Aug 11, 2011 at 01:10:07PM -0700, Ian Collins wrote:
On 08/12/11 08:00 AM, Ray Van Dolson wrote:
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by increasing the overprovisioning
From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss-
boun...@opensolaris.org] On Behalf Of Ray Van Dolson
Are any of you using the Intel 320 as ZIL? It's MLC based, but I
understand its wear and performance characteristics can be bumped up
significantly by increasing the
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