Disk failure has a medium impact on throughput
Difficult to rebuild in the event of a disk failure (as compared to RAID level 1)
For us all the data is important to recover
Also DELL offer RAID5 with SCSI only
I am going for "74GB SATA, 10K RPM Hard Drive with 8MB DataBurst Cache" which should have better performance than the 7500 RPM drive. Is it better?