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I am building a new system soon, I will have multiple 1-2tb hard drives for storage in it. I only have experience uasing the sataII drives but I saw somewhere that I should be using something like SAS? I read that if I were going to have 20 drives that I could use 4 SAS cables vs 20 SATA cables.

Can someone help me understand this better? If it were only 4 cables then how would 20 drives hook up? Also can a regualr sata2 drive hook up to that?

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Serial Attached SCSI (SAS) is designed for hot-swapping. I would recommend reading that especially this.

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Also, you might need a riser for your SAS drive. We had to deal with one on our backup server but it was a real pain in the neck so we went chose SATA Raptor. – r0ca Mar 21 '10 at 21:20

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