Messages in this thread | | | Date | Tue, 27 Apr 2004 11:45:22 -0400 | From | Timothy Miller <> | Subject | Re: File system compression, not at the block layer |
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Ben Greear wrote: > Timothy Miller wrote: > >>> Wouldn't this pretty much guarantee worst-case latency scenario for >>> reading, since >>> on average at least one of your 32 disks is going to require a full >>> rotation >>> (and probably a seek) to find it's bit? >> >> >> >> >> Only for the first bit of a block. For large streams of reads, the >> fifos will keep things going, except for occasionally as drives drift >> in their relative rotation positions which can cause some delays. > > > So how is that better than using a striping raid that stripes at the > block level or multi-block level? >
It's only better for large streaming writes. The FIFOs I'm talking about above would certainly be smaller than typical RAID0 stripes.
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