RE: disk arms (was RE: Tips for user ASP)

Vernon,

Yes, you're there.  The write cache associated with disk drives is a
place on each drive where the write information is stored while waiting
for the disk arm to become available.  The operating system notifies the
program that the write is complete when the information is moved into
cache so that the program can continue on.  The write cache in a disk
drive is either non-volatile or battery-powered so that if a system
crashes during a write operation, the remaining data can be written to
disk when the system powers back up.

Regards,
Andy Nolen-Parkhouse

> On Behalf Of vhamberg@attbi.com
> Subject: RE: disk arms (was RE: Tips for user ASP)
>
> I'm rapidly getting out of my depth here. Is a write
> cache a place to put things while waiting for a resource
> to be available? Like a buffer on a serial connection,
> kind of? That seems different from another use of cache,
> where recently used items are placed so they don't need
> to be retrieved from a slower resource?
>
> Am I close?