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Silly question, but why use 10k SCSI drives?

I designed that machine in late 2003 and finished building it in early 2004. I first booted it in early March. At the time I built it, I was doing some heavy database stuff (using postgreSQL) and I knew that kind of thing was IO limited. So I wanted a lot of spindles to minimize seeking. I also wanted very fast data transfers and short seek times. I also wanted to be able to seek and do IO on multiple drives at the same time. In those days, EIDE and SCSI were the options, and EIDE drives just could not manage it. Were I doing that today, I would use a combination of SAS drives and one SSD drive (if you can call those things drives). But since I am not doing that work anymore, I will be scrapping the 4 small SCSI drives. Anyhow, 4 of these drives (smallones: 20 GBytes) were dedicated to the database, and 2 of them (larger ones: 76 GBytes) were used for the rest of the system. The motherboard supported two Ultra/320 LVD SCSI controllers to increase parallel processing ability. The motherboard had two Intel Xeon 3.06 GHz hyperthreaded processors that acted as 4 separate processors as far as the OS was concerned. There were 8 GBytes of RAM so a lot of the data remained in RAM instead of being retrived from disk -- when possible.

As far as the new machine is concerned, those SCSI drives are perfectly good, and it may be easier to backup my data onto the new machine by just putting those SCSI drives. And they are highly reliable, so I might as well keep them in there. The new machine will also have a new SATA hard drive in there. I will need the SCSI adapter to drive the two SCSI drives and also my VXA-2 tape drive where my backups are.
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