Hey Tularis1,
Firstly, your RAID array isn't going to give you a lot of performance. With 5 SATA drives in RAID5 at best you would have about 100 write IOPS total at your disposal. With heavy backups running this is probably going to kill the performance. On average a 7200rpm SATA drive will deliver about 80-100 IOPS total, then with 5 in an array gives you around 400-500 IOPS. Apply the RAID5 write penalty and you are back at a write performance of just over a single disk.
As for the hpacucli tool, try ./opt/hp/hpacucli/bin/hpacucli
Cheers!
Ben Loveday