i see dual HDs as a marketing ploy mostly. if you really need that much space (>120gb) then get a NAS or external USB drive.
planning to purchase new laptop offering a choice of a dual hard drives - SATA (120gb x 2) at 5400rpm or 7200rpm.
1. does dual HHD use more battery power ?
2. generate more heat ?
3. increase or decrease performance speed ?
I am not interested in RAID or the backup function ?
My storage needs are modest pictures and music.
Gene, Bradenton, FL