Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-10 Thread Will Murnane
On Wed, Sep 10, 2008 at 16:56, Matt Beebe <[EMAIL PROTECTED]> wrote: > So how 'bout it hardware vendors? when can we get a PCIe(x8) SAS/SATA > controller with an x4 internal port and an x4 external port and 512MB battery > backed cache for about $250?? :) Heck, I'd take SATA only if I could ge

Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-10 Thread Matt Beebe
> > > I'm guessing one of the reasons you wanted a > non-RAID controller with > > a write cache was so that if the controller failed, > and the exact same > > model wasn't available to replace it, most of your > pool would still be > > readable with any random controller, modulo risk of > corrupti

Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-06 Thread Ross
Hey Miles, Yes, you remembered right. If the zpool.cache file is there, Solaris will mount the pool fine on boot with or without the slog. So if you're running a slog, make sure you keep a backup of that file! I was told that work is being done to make zpool import work the same way so pools

Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-04 Thread Tomas Ă–gren
On 03 September, 2008 - Aaron Blew sent me these 2,5K bytes: > On Wed, Sep 3, 2008 at 1:48 PM, Miles Nordin <[EMAIL PROTECTED]> wrote: > > > I've never heard of a battery that's used for anything but RAID > > features. It's an interesting question, if you use the controller in > > ``JBOD mode''

Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-03 Thread Bryan Wagoner
Doesn't really have a write cache, but some of us have been using this relatively inexpensive card with good fast results. I've been using it with SATA rather than SAS. AOC-USAS-L8i http://www.supermicro.com/products/accessories/addon/AOC-USAS-L8i.cfm Thread: http://opensolaris.org/jive/thread

Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-03 Thread Aaron Blew
On Wed, Sep 3, 2008 at 1:48 PM, Miles Nordin <[EMAIL PROTECTED]> wrote: > I've never heard of a battery that's used for anything but RAID > features. It's an interesting question, if you use the controller in > ``JBOD mode'' will it use the write cache or not? I would guess not, > but it might.

Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-03 Thread Richard Elling
comment at bottom... Miles Nordin wrote: >> "mb" == Matt Beebe <[EMAIL PROTECTED]> writes: >> > > mb> Anyone know of a SATA and/or SAS HBA with battery backed write > mb> cache? > > I've never heard of a battery that's used for anything but RAID > features. It's an in

Re: [zfs-discuss] SAS or SATA HBA with write cache

2008-09-03 Thread Miles Nordin
> "mb" == Matt Beebe <[EMAIL PROTECTED]> writes: mb> Anyone know of a SATA and/or SAS HBA with battery backed write mb> cache? I've never heard of a battery that's used for anything but RAID features. It's an interesting question, if you use the controller in ``JBOD mode'' will it us

[zfs-discuss] SAS or SATA HBA with write cache

2008-09-03 Thread Matt Beebe
Anyone know of a SATA and/or SAS HBA with battery backed write cache? Seems like using a full-blown RAID controller and exporting each individual drive back to ZFS as a single LUN is a waste of power and $$$. Looking for any thoughts or ideas. Thanks. -Matt -- This message posted from opensol