Messages in this thread | | | Date | Sat, 14 Aug 2004 18:56:34 -0400 | From | Jeff Garzik <> | Subject | Re: Linux SATA RAID FAQ |
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On Sat, Aug 14, 2004 at 10:49:24PM +0100, Alan Cox wrote: > On Iau, 2004-08-12 at 18:30, Jeff Garzik wrote: > > > The SX4 has an on-board DIMM (128M - 2G), through which all data _must_ > > > pass. The data transfer between host and on-board DIMM is a separate > > > DMA engine and separate interrupt event from the four ATA DMA engines > > > (one per SATA port). There are several possibilities that are worth > > > exploring on this card: > > > > > > * Caching > > Is it battery backed ? If it is battery backed then its useful, if not > then it becomes less useful although not always. The i2o drivers have > some ioctls so you can turn on writeback caching even without battery > backup. While this is suicidal for filesytems its just great for swap..
Nope not battery backed...
Jeff
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