I have a 4 bay StarTech RAID enclosure (S354UFER) with 4x2GB Smasung Spinpoint Drives. RAID 0 was very fast but RAID 5 is slower than my other UDB2 drives to write (I am using FW800 for RAID). Is this normal?
I am considering switching from RAID 5 to 10. I know it will give me less storage but it will be fast and secure (I gather I can loose 1 drive without data loss). I assume this is fast to write as well as read.
Everybody seems to be recommending RAID 5, odd they do not mention how slow to write it is;(.
RAID 5 is not the fastest, RAID 0 is faster than RAID 5 for the same number of spindles. RAID 5 also incurs a write penality for parity calculations. Unless you have a dedicated hardware RAID controller WITH a processor you will actually steal CPU cycles for these calcs on RAID 5. RAID 5 is really only good for mass storage or write once, read many scenarios. If you want random IO speed, go RAID 0 or RAID 10.