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 bfrie...@simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/ GraphicsMagick Maintainer, http://www.GraphicsMagick.org/
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