Re: Write Back Caching on Hard Disks
From: Dan Lovinger [MSFT] (danlo_at_online.microsoft.com)
Date: 10/12/04
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Date: Tue, 12 Oct 2004 13:14:47 -0700
The drive. Caches on controllers aren't controlled from the drive's property
page. The storage folks tell me that controller caches are usually exposed
through custom UI that each manufacturer provides.
I don't know of any KB, but ones may exist talking about parts of what we're
talking about here.
Note that the drive cache here is the one *on* the drive - not in the
machine's RAM.
-- Dan Lovinger Microsoft Corporation Please do not send e-mail directly to this alias. This alias is for newsgroup purposes only. "Rick" <me@privacy.net> wrote in message news:%23K8jOuyrEHA.1816@TK2MSFTNGP09.phx.gbl... > What device are you referring to, the drive or the controller? > Both (potentially, or at least usually in the case of RAID > controllers) have caches. I assumed the Device Manager > option controlled the drive's cache, while the bios option on > the RAID controller controlled its own caching? > > Is a comprehensive summary of this topic available somewhere > in MS's KB? > > Rick > > "Dan Lovinger [MSFT]" <danlo@online.microsoft.com> wrote in message > news:%23YsCLGyrEHA.2596@TK2MSFTNGP12.phx.gbl... >> Its exactly the other way around. The cache contolled in the device >> manager >> is the device's cache - not the operating system's file cache. >> >> -- >> Dan Lovinger >> Microsoft Corporation >> Please do not send e-mail directly to this alias. This alias is for >> newsgroup purposes only. >> >> >> "Rick" <me@privacy.net> wrote in message >> news:uSc8UbarEHA.516@TK2MSFTNGP09.phx.gbl... >> > "Gabe Matteson" <gmatteson@inquery.biz.nospam> wrote in message >> > news:eYGyc8ZrEHA.1296@TK2MSFTNGP12.phx.gbl... >> >> the write back caching feature for the hard disks in device manager, >> >> does >> >> that caching only occur in the memory of the OS >> > >> > yes. >> > >> > , or does that write back >> >> caching on device manager work in conjunction with the raid controller >> >> battery backed cache? >> > >> > no. >> > >> > or does the raid controller cache only work at the >> >> hardware level for the disks and have nothing to do with the device >> >> manager >> >> write back caching feature? >> > >> > yes. >> > >> > Rick >> > >> > >> >> > >
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