Zhu Han wrote:
On Mon, Mar 1, 2010 at 1:05 PM, Daniel Carosone <d...@geek.com.au
<mailto:d...@geek.com.au>> wrote:
> Is there anything that is safe to use as a ZIL, faster than the
> Mtron but more appropriate for home than a Stec?
ACARD ANS-9010, as mentioned several times here recently (also sold as
hyperdrive5)
+1 for this device. Although I don't own one, but it looks promising
for this purpose based on the discussion in archive of this list.
--
Dan.
I've played with one, and they're pretty much what you would expect for
a DRAM-based Solid State device. Blazingly fast. :-)
Two caveauts: if you get the single-SATA version (9010B = 1 sata port,
9010 = 2 sata ports), it pretty quickly floods the SATA link, which
becomes the bottleneck; even the 2-port version can overwhelm both ports
under heavy use. This is one device that really is going to benefit
from the new SATA 6Gbit standard (that is, when it gets here).
Second caveaut: every time the device detects power loss, it backs up
the DRAM to the CF card. If you don't get the external power adapter,
every time you power cycle the system, power is lost to the 9010 (it
gets power from an internal HD connector). Not just when the system is
unplugged, but any time the power supply cycles power. Backing up 32GB
to a CF card that can't do more than 100MB/s is Slooooooow (6-10
minutes). I don't remember what happens if power is restored in the
middle of the backup.
In any case, I'd recommend getting the external power adapter if you
plan on using this with any system which may be reset with any frequency
(more than once a week, IMHO).
All that said, you get a super 32GB SSD for about $1000 fully tricked out.
Now, if they could only make something like this in a 3.5" low-profile
hard drive form-factor. Maybe using SODIMMs...
--
Erik Trimble
Java System Support
Mailstop: usca22-123
Phone: x17195
Santa Clara, CA
_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
