Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Joseph L. Casale
does anybody have some numbers on speed on sata vs 15k sas? The next chance I get, I will do a comparison. Is it really a big difference? I noticed a huge improvement when I moved a virtualized pool off a series of 7200 RPM SATA discs to even 10k SAS drives. Night and day... jlc

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread James Lever
On 04/08/2009, at 9:42 PM, Joseph L. Casale wrote: I noticed a huge improvement when I moved a virtualized pool off a series of 7200 RPM SATA discs to even 10k SAS drives. Night and day... What I would really like to know is if it makes a big difference comparing say 7200RPM drives in

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Roch Bourbonnais
Le 4 août 09 à 13:42, Joseph L. Casale a écrit : does anybody have some numbers on speed on sata vs 15k sas? The next chance I get, I will do a comparison. Is it really a big difference? I noticed a huge improvement when I moved a virtualized pool off a series of 7200 RPM SATA discs to

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Ross Walker
On Aug 4, 2009, at 7:26 AM, Joachim Sandvik no-re...@opensolaris.org wrote: does anybody have some numbers on speed on sata vs 15k sas? Is it really a big difference? For random io the number of IOPS is 1000/(mean access + avg rotational latency) (in ms) Avg rotational latency

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Tim Cook
On Tue, Aug 4, 2009 at 7:33 AM, Roch Bourbonnais roch.bourbonn...@sun.comwrote: Le 4 août 09 à 13:42, Joseph L. Casale a écrit : does anybody have some numbers on speed on sata vs 15k sas? The next chance I get, I will do a comparison. Is it really a big difference? I noticed a huge

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Richard Elling
On Aug 4, 2009, at 7:01 AM, Ross Walker wrote: On Aug 4, 2009, at 7:26 AM, Joachim Sandvik no- re...@opensolaris.org wrote: does anybody have some numbers on speed on sata vs 15k sas? Is it really a big difference? For random io the number of IOPS is 1000/(mean access + avg

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Ross Walker
On Tue, Aug 4, 2009 at 10:33 AM, Richard Ellingrichard.ell...@gmail.com wrote: On Aug 4, 2009, at 7:01 AM, Ross Walker wrote: On Aug 4, 2009, at 7:26 AM, Joachim Sandvik no-re...@opensolaris.org wrote: does anybody have some numbers on speed on sata vs 15k sas? Is it really a big

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Joseph L. Casale
If by 'huge' you mean much more than 10K/7.2K in the data path with otherwise same number of spindles, then that has got to be because of something not specified here. No it doesn't. The response time on 10k drives is night and day better than 7.2k drives. VMware workloads look exactly like

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Roch
Tim Cook writes: On Tue, Aug 4, 2009 at 7:33 AM, Roch Bourbonnais roch.bourbonn...@sun.comwrote: Le 4 août 09 à 13:42, Joseph L. Casale a écrit : does anybody have some numbers on speed on sata vs 15k sas? The next chance I get, I will do a comparison. Is it

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Richard Elling
On Aug 4, 2009, at 8:01 AM, Ross Walker wrote: On Tue, Aug 4, 2009 at 10:33 AM, Richard Ellingrichard.ell...@gmail.com wrote: On Aug 4, 2009, at 7:01 AM, Ross Walker wrote: On Aug 4, 2009, at 7:26 AM, Joachim Sandvik no-re...@opensolaris.org wrote: does anybody have some numbers on

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-04 Thread Ross Walker
On Aug 4, 2009, at 2:11 PM, Richard Elling richard.ell...@gmail.com wrote: On Aug 4, 2009, at 8:01 AM, Ross Walker wrote: On Tue, Aug 4, 2009 at 10:33 AM, Richard Ellingrichard.ell...@gmail.com wrote: On Aug 4, 2009, at 7:01 AM, Ross Walker wrote: For random io the number of IOPS is

[zfs-discuss] Need tips on zfs pool setup..

2009-08-03 Thread Joachim Sandvik
I am looking at a nas software from nexenta, and after some initial testing i like what i see. So i think we will find in funding the budget for a dual setup. We are looking at a dual cpu Supermicro server with about 32gb ram and 2 x250gb OS disks, 21 x 1TB SATA disks, and 1 x 64gb SSD disk.

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-03 Thread Bob Friesenhahn
On Mon, 3 Aug 2009, Joachim Sandvik wrote: We are looking at a dual cpu Supermicro server with about 32gb ram and 2 x250gb OS disks, 21 x 1TB SATA disks, and 1 x 64gb SSD disk. The system will use nexenta's auto-cdp which i think are based on AVS to remote mirror to a system a few miles

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-03 Thread Bob Friesenhahn
On Mon, 3 Aug 2009, Joachim Sandvik wrote: Will the IOPS in the mirrored setup be so good, that a ssd cache disk might not be needed? And i then might go for 10 x mirror with 2 x 1tb instead of 9? I really dont think that space will be an issue This really depends on how many synchronous

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-03 Thread Tim Cook
On Mon, Aug 3, 2009 at 3:34 PM, Joachim Sandvik no-re...@opensolaris.orgwrote: I am looking at a nas software from nexenta, and after some initial testing i like what i see. So i think we will find in funding the budget for a dual setup. We are looking at a dual cpu Supermicro server with

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-03 Thread Tim Cook
On Mon, Aug 3, 2009 at 10:18 PM, Tim Cook t...@cook.ms wrote: On Mon, Aug 3, 2009 at 3:34 PM, Joachim Sandvik no-re...@opensolaris.orgwrote: I am looking at a nas software from nexenta, and after some initial testing i like what i see. So i think we will find in funding the budget for a

Re: [zfs-discuss] Need tips on zfs pool setup..

2009-08-03 Thread Tristan Ball
Sandvik Cc: zfs-discuss@opensolaris.org Subject: Re: [zfs-discuss] Need tips on zfs pool setup.. On Mon, Aug 3, 2009 at 3:34 PM, Joachim Sandvik no-re...@opensolaris.org wrote: I am looking at a nas software from nexenta, and after some initial testing i like what i see. So i think we