On Fri, 2007-01-19 at 17:59 -0800, David J. Orman wrote:
> Hi,
> 
> I'm looking at Sun's 1U x64 server line, and at most they support two drives. 
> This is fine for the root OS install, but obviously not sufficient for many 
> users.
> 
> Specifically, I am looking at the: http://www.sun.com/servers/x64/x2200/ 
> X2200M2.
> 
> It only has "Riser card assembly with two internal 64-bit, 8-lane, 
> low-profile, half length PCI-Express slots" for expansion.
> 
> What I'm looking for is a SAS/SATA card that would allow me to add an 
> external SATA enclosure (or some such device) to add storage. The supported 
> list on the HCL is pretty slim, and I see no PCI-E stuff. A card that 
> supports SAS would be *ideal*, but I can settle for normal SATA too.
> 
> So, anybody have any good suggestions for these two things:
> 
> #1 - SAS/SATA PCI-E card that would work with the Sun X2200M2.
> #2 - Rack-mountable external enclosure for SAS/SATA drives, supporting hot 
> swap of drives.
> 
> Basically, I'm trying to get around using Sun's extremely expensive storage 
> solutions while waiting on them to release something reasonable now that ZFS 
> exists.
> 
> Cheers,
> David

Not to be picky, but the X2100 and X2200 series are NOT
designed/targeted for disk serving (they don't even have redundant power
supplies).  They're compute-boxes.  The X4100/X4200 are what you are
looking for to get a flexible box more oriented towards disk i/o and
expansion.

That said (if you're set on an X2200 M2), you are probably better off
getting a PCI-E SCSI controller, and then attaching it to an external
SCSI->SATA JBOD.  There are plenty of external JBODs out there which use
Ultra320/Ultra160 as a host interface and SATA as a drive interface.
Sun will sell you a supported SCSI controller with the X2200 M2 (the
"Sun StorageTek PCI-E Dual Channel Ultra320 SCSI HBA").

SCSI is far better for a host attachment mechanism than eSATA if you
plan on doing more than a couple of drives, which it sounds like you
are. While the SCSI HBA is going to cost quite a bit more than an eSATA
HBA, the external JBODs run about the same, and the total difference is
going to be $300 or so across the whole setup (which will cost you $5000
or more fully populated). So the cost to use SCSI vs eSATA as the host-
attach is a rounding error.



-- 
Erik Trimble
Java System Support
Mailstop:  usca14-102
Phone:  x17195
Santa Clara, CA
Timezone: US/Pacific (GMT-0800)

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