Hi, I was wondering do you guys have any recommendations as replacement for Intel X25-E as it is being EOL''d? Mainly as for log device. With kind regards Markus Kovero -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mail.opensolaris.org/pipermail/zfs-discuss/attachments/20110920/1fe074ed/attachment.html>
On Sep 20, 2011, at 12:21 AM, Markus Kovero wrote:> Hi, I was wondering do you guys have any recommendations as replacement for Intel X25-E as it is being EOL?d? Mainly as for log device.Can you rank your priorities: + cost/IOPS + cost + latency + predictable latency + HA-cluster capable There are quite a number of devices available now, at widely varying costs, application, and performance. -- richard -- ZFS and performance consulting http://www.RichardElling.com VMworld Copenhagen, October 17-20 OpenStorage Summit, San Jose, CA, October 24-27 LISA ''11, Boston, MA, December 4-9
> Can you rank your priorities: > + cost/IOPS > + cost > + latency > + predictable latency > + HA-cluster capable > > There are quite a number of devices available now, at widely varying costs, application, and performance. > -- richardI''d say price range around same than X25-E was, main priorities being predictable latency and performance. Also write wear shouldn''t get an issue when writing 150MB/s 24/7 365. Thanks Yours Markus Kovero
On Wed, Sep 21 at 10:32, Markus Kovero wrote:> I''d say price range around same than X25-E was, main priorities > being predictable latency and performance. Also write wear shouldn''t > get an issue when writing 150MB/s 24/7 365.At 150MB/s continuously, you''re writing 5PB/year (assuming a write amplification of 1.0) In practice, wAmp is often much higher, depending on the workload. How long do you plan on having this device last? How much retention do you need in your application? What is your workload? --eric -- Eric D. Mudama edmudama at bounceswoosh.org
On Tue, Sep 20, 2011 at 12:21 AM, Markus Kovero <Markus.Kovero at nebula.fi> wrote:> Hi, I was wondering do you guys have any recommendations as replacement for > Intel X25-E as it is being EOL?d? Mainly as for log device.The Intel 311 seems like a good fit. It''s a 20gb SLC device intended to act as a cache device with the Z68 chipset. -B -- Brandon High : bhigh at freaks.com
On Thu, Sep 22, 2011 at 12:46:42PM -0700, Brandon High wrote:> On Tue, Sep 20, 2011 at 12:21 AM, Markus Kovero <Markus.Kovero at nebula.fi> wrote: > > Hi, I was wondering do you guys have any recommendations as replacement for > > Intel X25-E as it is being EOL?d? Mainly as for log device. > > The Intel 311 seems like a good fit. It''s a 20gb SLC device intended > to act as a cache device with the Z68 chipset.It seems to perform similarly to the X-25E as well (3300 IOPS for random writes). Perhaps the drive can be overprovisioned as well? My impression was that Intel was classifying the 3xx series as non-Enterprise however. Even with the SLC. I''m not sure what its rated lifetime is (1PB of data written?). Ray
On Thu, Sep 22, 2011 at 12:53 PM, Ray Van Dolson <rvandolson at esri.com> wrote:> It seems to perform similarly to the X-25E as well (3300 IOPS for > random writes). ?Perhaps the drive can be overprovisioned as well? > > My impression was that Intel was classifying the 3xx series as > non-Enterprise however. ?Even with the SLC.I don''t think the 311 has any over-provisioning (other than the 7% from GB -> GiB conversion). I believe it is an X25-E with only 5 channels populated. The upcoming enterprise models are MLC based and have greater over-provisioning AFAIK. The 20GB 311 only costs ~ $100 though. The 100GB Intel 710 costs ~ $650. The 311 is a good choice for home or budget users, and it seems that the 710 is much bigger than it needs to be for slog devices. -B -- Brandon High : bhigh at freaks.com
On Thu, Sep 22, 2011 at 01:21:26PM -0700, Brandon High wrote:> On Thu, Sep 22, 2011 at 12:53 PM, Ray Van Dolson <rvandolson at esri.com> wrote: > > It seems to perform similarly to the X-25E as well (3300 IOPS for > > random writes). ?Perhaps the drive can be overprovisioned as well? > > > > My impression was that Intel was classifying the 3xx series as > > non-Enterprise however. ?Even with the SLC. > > I don''t think the 311 has any over-provisioning (other than the 7% > from GB -> GiB conversion). I believe it is an X25-E with only 5 > channels populated. The upcoming enterprise models are MLC based and > have greater over-provisioning AFAIK. > > The 20GB 311 only costs ~ $100 though. The 100GB Intel 710 costs ~ $650. > > The 311 is a good choice for home or budget users, and it seems that > the 710 is much bigger than it needs to be for slog devices.My thoughts exactly. If the 311 is aimed at home users (wear-wise in _addition_ to marketing wise), then it doesn''t really seem there is a suitable "Intel" replacement for the X-25E as far as an slog device is concerned. The drives are all way too big. :) We are currently looking at using the 320 or 710 overprovisioned (though the latter is likely more than we want to spend). Ray
On Thu, 22 Sep 2011, Brandon High wrote:> > The 20GB 311 only costs ~ $100 though. The 100GB Intel 710 costs ~ $650. > > The 311 is a good choice for home or budget users, and it seems that > the 710 is much bigger than it needs to be for slog devices.Much too big is a good thing if it results in much more space available for wear-leveling. If the device is designed well, it should last longer. Bob -- Bob Friesenhahn bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
On Thu, Sep 22, 2011 at 01:34:09PM -0700, Bob Friesenhahn wrote:> On Thu, 22 Sep 2011, Brandon High wrote: > > > > The 20GB 311 only costs ~ $100 though. The 100GB Intel 710 costs ~ $650. > > > > The 311 is a good choice for home or budget users, and it seems that > > the 710 is much bigger than it needs to be for slog devices. > > Much too big is a good thing if it results in much more space > available for wear-leveling. If the device is designed well, it > should last longer. > > BobOf course, at $650 a pop, if you''re buying two Intel 710 100GB drives for either increased performance or redundancy, you could basically afford a DDRdrive... Ray
> I don''t think the 311 has any over-provisioning (other than the 7% from GB -> GiB conversion). I believe it is an X25-E with only 5 channels populated. The upcoming enterprise models are MLC based and have greater over-provisioning AFAIK. > The 20GB 311 only costs ~ $100 though. The 100GB Intel 710 costs ~ $650. > The 311 is a good choice for home or budget users, and it seems that the 710 is much bigger than it needs to be for slog devices.I think 311 looks suitable replacement, as in you can put four 311''s instead of 2 X25-E''s as slog (when it comes to pricing), going to test it out. Thanks to you all. Yours Markus Kovero