Re: [zfs-discuss] hard drive choice, TLER/ERC/CCTL

2009-12-10 Thread Mark Grant
Yeah, this is my main concern with moving from my cheap Linux server with no redundancy to ZFS RAID on OpenSolaris; I don't really want to have to pay twice as much to buy the 'enterprise' disks which appear to be exactly the same drives with a flag set in the firmware to limit read retries, but

Re: [zfs-discuss] hard drive choice, TLER/ERC/CCTL

2009-12-10 Thread Mark Grant
>From what I remember the problem with the hardware RAID controller is that the >long delay before the drive responds causes the drive to be dropped from the >RAID and then if you get another error on a different drive while trying to >repair the RAID then that disk is also marked failed and you

Re: [zfs-discuss] hard drive choice, TLER/ERC/CCTL

2009-12-10 Thread Mark Grant
Thanks, sounds like it should handle all but the worst faults OK then; I believe the maximum retry timeout is typically set to about 60 seconds in consumer drives. -- This message posted from opensolaris.org ___ zfs-discuss mailing list zfs-discuss@ope

Re: [zfs-discuss] Is LSI SAS3081E-R suitable for a ZFS NAS ?

2010-01-28 Thread Mark Grant
> Also, I noticed you're using 'EARS' series drives. > Again, I'm not sure if the WD10EARS drives suffer > from a problem mentioned in these posts, but it might > be worth looking into -- especially the last link: Aren't the EARS drives the first ones using 4k sectors? Does OpenSolaris support th