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Brians256 · 06-18-2007, 01:54 PM

Something that I didn't mention, but probably should have, is that the SCSI and next-gen SAS do is greatly improve multi-tasking throughput. For an I/O intensive server, SCSI/SAS do help quite a bit on the pseudo-random I/O presented by multiple threads of execution. This was not a benefit to me, since I just want a huge bag-o-bits to hold my movies with some extra reliability.

I don't even benefit from the higher throughput available with my RAID array, since all I need is 10-20Mbps (or about 2.6 MB/sec) to easily satisfy remote play of DVDs. The array can saturate the gigabit ethernet switch that I have installed, but I don't need much more than 1-3% of it. My maximum load scenario is ripping a DVD while I watch another DVD in another room. If the pre-built NAS boxen had supported 8 drives and OCE (online capacity expansion), I'd have used one of them, since the 3ware card is total overkill for my performance needs. The cheaper RAID cards didn't do OCE.

06-18-2007, 01:54 PM	#16
Brians256 Pro/Staff Join Date: Oct 2001 Location: Klamath Falls, OR Posts: 1,439	Re: picked up a free computer Something that I didn't mention, but probably should have, is that the SCSI and next-gen SAS do is greatly improve multi-tasking throughput. For an I/O intensive server, SCSI/SAS do help quite a bit on the pseudo-random I/O presented by multiple threads of execution. This was not a benefit to me, since I just want a huge bag-o-bits to hold my movies with some extra reliability. I don't even benefit from the higher throughput available with my RAID array, since all I need is 10-20Mbps (or about 2.6 MB/sec) to easily satisfy remote play of DVDs. The array can saturate the gigabit ethernet switch that I have installed, but I don't need much more than 1-3% of it. My maximum load scenario is ripping a DVD while I watch another DVD in another room. If the pre-built NAS boxen had supported 8 drives and OCE (online capacity expansion), I'd have used one of them, since the 3ware card is total overkill for my performance needs. The cheaper RAID cards didn't do OCE.