IBM today begins selling its first solid state disks for its Power Systems boxes, the machines it uses to attack the Unix, Linux, and OS/400 installed bases.
The IBM SSD, which comes in a 2.5-inch form factor, has about 220 MB/sec of sustained throughput on reads and about 122 MB/sec of sustained throughput on writes and can perform about 28,000 I/O operations per second (IOPS) on random transactional processing. The SSD has a 3 Gb/sec SAS interface and has an average access time of from 20 to 120 microseconds, the difference depending on where data is located on the SSD. According to IBM's specs, the SSD has about 87 times the I/O operations per second of a 15K RPM SAS drive and yet consumes about one-fifth of the power
Timothy Prickett Morgan in The Register
http://www.theregister.co.uk/2009/05/22/ibm_power_ssds/
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