On Thu, 2007-01-11 at 10:35 -0800, Richard Elling wrote:
> The product was called Sun PrestoServ. It was successful for benchmarking
> and such, but unsuccessful in the market because:
> + when there is a failure, your data is spread across multiple
> fault domains
> + it is not clusterable, which is often a requirement for data
> + it used a battery, so you had to deal with physical battery
> replacement and all of the associated battery problems
> + it had yet another device driver, so integration was a pain
> Google for it and you'll see all sorts of historical perspective.
> -- richard
Yes, I remember (and used) PrestoServ. Back in the SPARCcenter 1000
And yes, local caching makes the system non-clusterable. However, all
the other issues are common to a typical HW raid controller, and many
people use host-based HW controllers just fine and don't find their
problems to be excessive.
And, honestly, I wouldn't think another driver would be needed.
Attaching a SSD or similar usually uses an existing driver (it normally
appears as a SCSI or FC drive to the OS).
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