Promise Technology EX4650A Clothes Dryer User Manual


 
Step 3: Choosing the Physical Drives
9
Step 3: Choosing the Physical Drives
The SuperTrak EX Controller card supports SAS and 1.5-Gb/s or 3.0-Gb/s SATA
physical drives. For optimal performance, install physical drives of the same
model and capacity. The drives’ matched performance allows the logical drive to
function better as a single logical drive.
The table above shows the number of drives required for each RAID level.
Level Number of Drives Level Number of Drives
RAID 0 1 or more RAID 6 4 to 16*
RAID 1 2 only RAID 10 4 or more**
RAID 1E 3 or more RAID 50 6 or more
RAID 5 3 to 16* RAID 60 8 or more
* Requires SAS expansion
** Requires an even number of drives