Re: Maximum Possible Insert Performance?

Josh Berkus wrote:
> William,
>
>
>>The SanDisks do seem a bit pokey at 16MBps. On the otherhand, you could
>>get 4 of these suckers, put them in a mega-RAID-0 stripe for 64MBps. You
>>shouldn't need to do mirroring with a solid state drive.
>
>
> I wouldn't count on RAID0 improving the speed of SANDisk's much.  How are you
> connecting to them?  USB?   USB doesn't support fast parallel data access.

You can get ATA SanDisks up to 2GB. Another vendor I checked out --
BitMicro -- has solid state drives for SATA, SCSI and FiberChannel. I'd
definitely would not use USB SSDs -- USB performance would be so pokey
to be useless.

> Now, if it turns out that 256MB ramdisks are less than 1/5 the cost of 1GB
> ramdisks, then that's worth considering.

Looks like they're linear with size. SanDisk Flashdrive 1GB is about
$1000 while 256MB is $250.

> You're right, though, mirroring a solid state drive is pretty pointless; if
> power fails, both mirrors are dead.

Actually no. Solid state memory is non-volatile. They retain data even
without power.