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What's the expected IO speed for SSD on SATA2?
There are providers offering SSDs on older CPUs (L5420 / L5520 / L5640 etc) and mostly connected through mobos with SATA2. What is the expected I/O speed for these drives?
I tried once before and average sequential read I got is 125mb/s.
I was thinking if this is worth the upgrade or should I stick with a bigger storage SATA, specially on a web server stack in one node (not for general hosting, just single web app).
Comments
Even on SATA2 port - the speed will be significantly higher and will be well worth it, if you need the performance gain and can live with smaller storage.
180mbps
And ioping around 150us
what you using the server?
I/O speed(1st run) : 243 MB/s I/O speed(2nd run) : 253 MB/s I/O speed(3rd run) : 255 MB/s Average I/O speed : 250.333 MB/sSATA2 SSD on ESXi VPS
240GB SSD on SATA2
dd if=/dev/zero of=iotest bs=64k count=16k conv=fdatasync && rm -fr iotest 1073741824 bytes (1.1 GB) copied, 4.68234 s, 229 MB/s ioping -c 10 /dev/sda 10 requests completed in 9.0 s, 923 iops, 3.6 MiB/s min/avg/max/mdev = 546 us / 1.1 ms / 1.7 ms / 411 us ioping -RL /dev/sda 2.4 k requests completed in 3.0 s, 794 iops, 198.6 MiB/s min/avg/max/mdev = 231 us / 1.3 ms / 7.0 ms / 479 us ioping -R /dev/sda 11.1 k requests completed in 3.0 s, 3.8 k iops, 14.7 MiB/s min/avg/max/mdev = 60 us / 266 us / 3.1 ms / 110 us260 MB/s is possible on SATA2