On 02/01/2015 01:49 PM, Andrew Gabriel wrote:
cjt wrote:
On 01/31/2015 06:45 PM, Jerry Kemp wrote:
I thought that SATA expansion cards were always bad news when used with
Solaris, and Solaris based distro's.
There are tons of horror stories out there, primarily thru the ZFS
mailing list.
Has this changed?
Are there end users out there using SATA expansion cards with
OpenIndiana, Solaris, etc. with positive and reliable results?
Jerry
FWIW, I have a server doing video streaming that has a multitude of
Intel RES2SV240 expanders hanging off of LSI controllers, and have not
experienced problems except when I first configured it and tried to
have multiple layers of expander. I don't recall what exactly the
problem was (it was quite a while ago), but I no longer try to hang
expanders off of other expanders.
SAS or SATA drives?
The problems are with the poor implementations of SATA Tunneling
Protocol in the SAS expanders, so it only impacts SATA drives, not SAS
drives.
Having said that, I haven't heard of anyone using RES2SV240 before - do
you know if it uses standard LSI SAS expander chips, or something else?
SATA drives, specifically a bunch of Seagate ST3000DM001's. Here's the
info on the expander:
http://www.newegg.com/Product/Product.aspx?Item=N82E16816117207
which links to the "horse's mouth:"
http://ark.intel.com/products/49596/Intel-RAID-Expander-RES2SV240
which says it's an LSI SAS2x24 expander at heart.
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