HP A7143A RAID160 SA Controller Support Guide

Hard Drive Installation and Replacement
Background
Appendix C140
Background
Each SCSI channel on the RAID160 SA controller supports up to 14
physical disks. Disks can be of the Ultra320 or the Ultra160 type.
Each physical disk on a SCSI bus must have a unique ID value in the
range of 0 to 15 (except ID 7, which is typically reserved for controller
use). This value is set automatically on hot-pluggable disk drives in the
storage systems that are supported by the RAID160 SA controller.
• Do not terminate the disk drives. HP servers and internal cabling
provide the required termination of the SCSI bus.
• Do not use disk drives of different capacity in the same array. The
excess capacity of larger disk drives cannot be used by the array and
is wasted.
• Do not use hot-pluggable disk drives on the same SCSI bus as
non-hot-pluggable disk drives.