I am going to upgrade my Transaction Processing Server (still running Window 2000 Server OS). It has extensive Read/Write operations from time to time. R/W performance (especially the write) is my top priority while reliability is the second priority (as I will still carry out scheduled backup daily). I do not know which would be the best configuration :
Raid 10 using 4 SATA II 3.0Gb/sec HD (Intel Server board has onboard Raid 0, 1, 5, & 10) OR
a single 15K SAS HD
You could read , but bear in mind that the single drive he used is not a 15K SAS unit. Depending on the SATA drives that you'll use, a 15K SAS drive might be quicker, but not as safe. You could also check the "IOMeter File Server 1 I/O" benchmarks at .
Thanks for all the useful advises. I studied the benchmarks charts in Tom's Hardware. The IO Meter File Server benchmark of a single SAS drive (Seagate Cheetah 15K.5) is way out perform any RAID configuration:
However, for a more meaningful comparison, I want to know what kind of hard drives are being used in these RAID configuration for these benchmark tests. I looked around but there was no description for the hardware configuaration under the RAID Matrix Charts. Does anyone has the answers?