On Wed, Jan 19, 2011 at 03:04:09PM -0200, Roberto Spadim wrote: > check: > Key Specifications > > * 500GB, 320GB and 250GB hard drive capacity options (hard disk > like, maybe 100mb/s with 7200rpm - it?s you hd disk (/dev/sda in my > example) ) > * 7200-RPM spindle speed > * 4GB SLC NAND solid state memory (SSD like, maybe 300mb/s - > it?s you ssd cache disk (/dev/sdb in my example) ) > * 32MB of drive-level cache (is it ddr3? ddr3 is 10000mb/s, maybe > less, sata is 3gb/s - it?s the linux/computer ram memory) > * SATA 3Gb/s with Native Command Queuing (3000mb/s) > > what this disk do? > > operational system write to (hd) and read from (hd) > > hd: > write/read in memory > if not in memory, read from ssd > if not in ssd, read from hd > > write can be async > when loser energy, save memory to ssd, 32mb is fast to write, with > 300mb/s ssd speed you can use a super capacitor and have 1 second of > life... > after write to ssd, write to hd Sounds about right. Can we make it happen? -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
