[OpenIndiana-discuss] Recommendations for fast storage

[Bob Friesenhahn]

On Tue, 16 Apr 2013, Sašo Kiselkov wrote:
>>
>> SATA and SAS are dedicated point-to-point interfaces so there is no
>> additive bottleneck with more drives as long as the devices are directly
>> connected.
>
> Not true. Modern flash storage is quite capable of saturating a 6 Gbps
> SATA link. SAS has an advantage here, being dual-port natively with
> active-active load balancing deployed as standard practice. Also please
> note that SATA is half-duplex, whereas SAS is full-duplex.

You did not describe how my statement about not being "additive" is 
wrong.  This is different than per-drive bandwidth being insufficient 
for latest SSDs.  Please expound on "Not true".

SAS/SATA are not like old parallel SCSI.

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/