External SATA 1,8" / 2,5" SSD

From ElphelWiki
Jump to: navigation, search
trying the camera with external SATA SSD

Just tried an external SATA 2,5" SSD from Intel.

Everything work perfectly and the SSD can be powered by the camera with a custom USB to SATA-power cable. Check the pinouts here: http://en.wikipedia.org/wiki/Serial_ATA

More information about those SSD can be found on : http://www.intel.com/design/flash/nand/mainstream/index.htm

# hdparm -i /dev/hda
Model=INTEL SSDSA2MH080G1GN, FwRev=045C8610, SerialNo=CVEM852500K5080DGN
Config={ Fixed }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=0
BuffType=(0) unknown, BuffSize=0kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=156301488
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes:  pio0 pio3 pio4 
DMA modes:  mdma0mdma1*mdma2
UDMA modes: udma0 udma1 udma2 
AdvancedPM=no WriteCache=enabled
Drive conforms to: ATA/ATAPI-7 T13 1532D rev.1:  ATA/ATAPI-2 ATA/ATAPI-3 ATA/ATAPI-4 ATA/ATAPI-5 ATA/ATAPI-6 ATA/ATAPI-7
* current active mode

and we measured about 18MB/sec write speed (limited by the ETRAX FS CPU), /dev/circbuf is ~19MB pseudo file in the camera:

# time dd if=/dev/circbuf of=/var/hdd/test1.dd bs=1M
18+1 records in
18+1 records out
real    0m 1.07s
user    0m 0.01s
sys     0m 1.01s