Difference between revisions of "Disk Options and Comparisons"

Revision as of 21:37, 14 September 2011

We have 3 disk options that conform with the low power requirement (< 2-3 Watts?):

To compare options amongst these drives, we need common parameters that give us a decent and standard metric. Some parameters are:

RAID gives the option to provide better read/write performance.

OCZ Vertex2 120GB SSD (Measured 230 MB/s write and 275 MB/s read throughput on Atom D510MO motherboard)

2 disks RAID0 was installed on Core2 and achieved measured 469 MB/s write throughput.

However 2 disks RAID0 was installed on Atom D510 but only achieved 238 MB/s (dd) 295 MB/s (hdparm) write throughput.

Atom D510 uses DMI bus which has theoretical limit 10Gb/s. It needs at least four SSDs to saturate and is not the bottleneck.

@@ Line 22: / Line 22: @@
 RAID gives the option to provide better read/write performance.
-OCZ Vertex2 120GB SSD (Measured 230 MB/s write throughput)
+OCZ Vertex2 120GB SSD (Measured 230 MB/s write and 275 MB/s read throughput on Atom D510MO motherboard)
 disks RAID0 was installed on Core2 and achieved measured 469 MB/s write throughput.
+=== Treat SSD as IDE ===
 However 2 disks RAID0 was installed on Atom D510 but only achieved 238 MB/s (dd) 295 MB/s (hdparm) write throughput.
-Atom D510 uses DMI bus which has theoretical limit is 10Gb/s. Thus four SSDs should saturate it.
+Atom D510 uses DMI bus which has theoretical limit 10Gb/s. It needs at least four SSDs to saturate and is not the bottleneck.