What are the merits of SAS vs SATA drives?
I am running a linux centos dedicated server. Basic specs are a Intel Dual Core Xeon X3065with 2GB ram and 2 x 160GB Sata drivers in RAID1 configuration. The server is used for host a php/mysql application.
I am in the process of upgrading, which will have a Quad Core Intel Xeon processor and 8 GB ram. One of the options is to upgrade to 2 x 300 GB SAS drives instead of 2 x 250 GB SATA drives. My understanding is that spindle speed on the SAS drives is 15k.
Is there any noticable speed difference from using SAS drives, and is reliability on a par with SATA?