Specifications

2
Storage Array Descriptions
This chapter contains technical descriptions of the SA550, SA600, SA650, SA800,
SA850, and SA900 storage arrays, the storage devices (for instance, enclosures,
disk drives, tape systems, solid state disks, and so forth), and the cabinets in
their various configurations.
Each SAxxx storage array includes a cabinet, storage devices, and a power
controller as described in the following sections.
2.1 H9646 Cabinet
The H9646 cabinet is a four-level cabinet that can be configured as one of several
different storage arrays depending on the storage devices (SA7x enclosures, RA82
disk drives, RA9x disk drives) and the power controller model installed.
2.2 H9A00 Cabinet
The H9A00 cabinet is a five-level cabinet that can be configured as one of several
different storage arrays depending on the storage devices (SA7x enclosures,
RA82 disk drives, RA9x disk drives, ESE50 solid state disks, TA8x7 tape storage
subsystem) and the power controller model installed.
2.3 SA7x Enclosure
The SA7x family of enclosures includes the SA70, SA71, SA72, and SA73. The
model number specifies the type RA7x disk drive installed in the enclosure.
An SA70 enclosure contains RA70 drives; the SA71 contains RA71 drives; and
the SA72 contains RA72 drives. Each enclosure can contain from one to four
disk drives. The SA7x enclosure provides power, cooling, and control for the
independently powered and operated RA7x disk drives. See Appendix C for a
complete listing of the SA7x enclosure and RA7x disk drive configurations.
2.4 RA7x Disk Drive
The RA7x family of disk drives includes the RA70, RA71, RA72, and RA73. The
capacities of the RA7x disk drives are listed in Table 1–3.
See the RA7x Disk Drive Service Manual for more information.
2.5 RA82 Disk Drive
The RA82 disk drive has a capacity of 623 MB (780 MB unformatted) and can be
installed in an H9646 cabinet without an enclosure.
See the RA82 Disk Drive User Guide and the SA482 Storage Array User Guide
for more information.
Storage Array Descriptions 2–1