Re: [zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Michael DeMan
Yes, particularly if you have older drives with 512 sectors and then buy a newer drive that seems the same, but is not, because it has 4k sectors. Looks like it works, and will work, but performance drops. On May 28, 2011, at 4:59 PM, Hung-Sheng Tsao (Lao Tsao 老曹) Ph.D. wrote: > yes good idea

Re: [zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Hung-Sheng Tsao (Lao Tsao 老曹) Ph.D.
yes good idea, another things to keep in mind technology change so fast, by the time you want a replacement, may be HDD does exist any more or the supplier changed, so the drives are not exactly like your original drive On 5/28/2011 6:05 PM, Michael DeMan wrote: Always pre-purchase one

Re: [zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Michael DeMan
Always pre-purchase one extra drive to have on hand. When you get it, confirm it was not dead-on-arrival by hooking up on an external USB to a workstation and running whatever your favorite tools are to validate it is okay. Then put it back in its original packaging, and put a label on it abou

Re: [zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Brian O'Connell
Thanks for the input. On Sat, May 28, 2011 at 1:35 PM, Richard Elling wrote: > On May 28, 2011, at 10:15 AM, Edward Ned Harvey wrote: > >>> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >>> boun...@opensolaris.org] On Behalf Of Brian >>> >>> I have a raidz2 pool with one disk th

Re: [zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Brian O'Connell
On Sat, May 28, 2011 at 1:15 PM, Edward Ned Harvey wrote: >> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >> boun...@opensolaris.org] On Behalf Of Brian >> >> I have a raidz2 pool with one disk that seems to be going bad, several > errors >> are noted in iostat.  I have an RMA fo

Re: [zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Richard Elling
On May 28, 2011, at 10:15 AM, Edward Ned Harvey wrote: >> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- >> boun...@opensolaris.org] On Behalf Of Brian >> >> I have a raidz2 pool with one disk that seems to be going bad, several > errors >> are noted in iostat. I have an RMA for

Re: [zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Edward Ned Harvey
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Brian > > I have a raidz2 pool with one disk that seems to be going bad, several errors > are noted in iostat. I have an RMA for the drive, however - no I am > wondering how I proceed. I need

[zfs-discuss] Have my RMA... Now what??

2011-05-28 Thread Brian
I have a raidz2 pool with one disk that seems to be going bad, several errors are noted in iostat. I have an RMA for the drive, however - no I am wondering how I proceed. I need to send the drive in and then they will send me one back. If I had the drive on hand, I could do a zpool replace.

Re: [zfs-discuss] optimal layout for 8x 1 TByte SATA (consumer)

2011-05-28 Thread Edward Ned Harvey
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Eugen Leitl > > How bad would raidz2 do on mostly sequential writes and reads > (Athlon64 single-core, 4 GByte RAM, FreeBSD 8.2)? > > The best way is to go is striping mirrored pools, right?

Re: [zfs-discuss] optimal layout for 8x 1 TByte SATA (consumer)

2011-05-28 Thread Edward Ned Harvey
> From: zfs-discuss-boun...@opensolaris.org [mailto:zfs-discuss- > boun...@opensolaris.org] On Behalf Of Frank Van Damme > > 4 mirrors of 2 = sustained bandwidth of 4 disks > raidz2 with 8 disks = sustained bandwidth of 6 disks Correction: 4 mirrors of 2 = sustained read bandwidth of 8 disks, sus