So, if I may, is this the correct summary of the answer to original
question (on JBOD for a ZFS HA cluster):
===
SC847E26-RJBOD1 with dual-ported SAS drives are known
to work in a failover HA storage scenario, allowing both servers
(HBAs) access to each single SAS drive individually, so
Of Thomas Nau
Sent: Sunday, May 29, 2011 11:07 PM
To: zfs-discuss@opensolaris.org
Subject: [zfs-discuss] JBOD recommendation for ZFS usage
Dear all
Sorry if it's kind of off-topic for the list but after talking
to lots of vendors I'm running out of ideas...
We are looking for JBOD systems which
(1
Dear all
Sorry if it's kind of off-topic for the list but after talking
to lots of vendors I'm running out of ideas...
We are looking for JBOD systems which
(1) hold 20+ 3.3 SATA drives
(2) are rack mountable
(3) have all the nive hot-swap stuff
(4) allow 2 hosts to connect via SAS (4+ lines
Dear all
Sorry if it's kind of off-topic for the list but after talking
to lots of vendors I'm running out of ideas...
We are looking for JBOD systems which
(1) hold 20+ 3.3 SATA drives
(2) are rack mountable
(3) have all the nive hot-swap stuff
(4) allow 2 hosts to connect via
Following up on some of this forum's discussions, I read the manuals on
SuperMicro's
SC847E26-RJBOD1 this weekend.
At the very least, this box provides dual-expander backplanes (2 BPs for a
total of
45 hot-swap disks), so each JBOD has 4 outgoing SFF8087 (4xSATA iPass)
connectors.
However it
Thanks Jim and all the other who have replied so far
On 05/30/2011 11:37 AM, Jim Klimov wrote:
...
So if your application can live with the unit of failover being a bunch of 21
or 24 disks -
that might be a way to go. However each head would only have one connection to
each backplane,
On Mon, May 30, 2011 at 08:06:31AM +0200, Thomas Nau wrote:
We are looking for JBOD systems which
(1) hold 20+ 3.3 SATA drives
(2) are rack mountable
(3) have all the nive hot-swap stuff
(4) allow 2 hosts to connect via SAS (4+ lines per host) and see
all available drives as disks, no
On May 30, 2011, at 2:37 AM, Jim Klimov wrote:
Following up on some of this forum's discussions, I read the manuals on
SuperMicro's
SC847E26-RJBOD1 this weekend.
We see quite a few of these in the NexentaStor installed base. The other
commonly
found 3.5 24-drive JBOD is the DataON
Thanks, now I have someone to interrogate, who seems to have
seen these boxes live - if you don't mind ;)
- Original Message -
From: Richard Elling richard.ell...@gmail.com
Date: Monday, May 30, 2011 22:04
We also commonly see the dual-expander backplanes.
According to the docs,
On Mon, May 30, 2011 at 1:35 PM, Jim Klimov j...@cos.ru wrote:
Thanks, now I have someone to interrogate, who seems to have
seen these boxes live - if you don't mind ;)
- Original Message -
From: Richard Elling richard.ell...@gmail.com
Date: Monday, May 30, 2011 22:04
We also
Dunno about Germany, but LSI and DataON both have offerings. (The LSI units
are probably going fast, as LSI exits that business having sold that unit to
NetApp.)
-- Garrett D'Amore
On May 30, 2011, at 10:08 AM, Thomas Nau thomas@uni-ulm.de wrote:
Dear all
Sorry if it's kind of
Tim Cook wrote:
SAS drives are SAS drives, they aren't like SCSI.
There aren't 20 different versions with different pinouts.
Uh-huh... Reading some more articles, I think I found the
answer to my question: the SAS connector seems to be
dual-sided (with conductive stripes on both sides of the
On Mon, May 30, 2011 at 6:16 PM, Jim Klimov jimkli...@cos.ru wrote:
Also some articles stated that at one time there were
single-port SAS drives, so there are at least two SAS
connectors after all ;)
Nope, only one mechanical connector. A dual port cable can be used
with single- or dual-ported
On May 30, 2011, at 6:16 PM, Jim Klimov wrote:
Multipathing is handled by mpxio.
So I configure MPxIO, then feed the zpool create device
names of multipathed aggregates, and hopefully failover
should work.
Yes, it is that simple :-)
But can two paths work in parallel to double the
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