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CHEETAH 15K.7 SAS PRODUCT MANUAL, REV. F 36
10.0 INSTALLATION
Cheetah 15K.7 disk drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive.
SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays designed to
accommodate the drive. In such systems, the host system typically provides a carrier or tray into which you need to mount
the drive. Mount the drive to the carrier or tray provided by the host system using four 6-32 UNC screws. Do not over-tighten
or force the screws. You can mount the drive in any orientation.
Note. SAS drives are designed to be attached to the host system without I/O or power cables. If you intend the use the
drive in a non-backplane host system, connecting the drive using high-quality cables is acceptable as long as the
I/O cable length does not exceed 4 meters (13.1 feet).
Slide the carrier or tray into the appropriate bay in your host system using the instructions provided by the host system. This
connects the drive directly to your system’s SAS connector. The SAS connector is normally located on a SAS backpanel.
See Section 11.4.1 for additional information about these connectors.
Power is supplied through the SAS connector.
The drive is shipped from the factory low-level formatted in 512-byte logical blocks. You need to reformat the drive only if you
want to select a different logical block size.
10.1 DRIVE ORIENTATION
The drive may be mounted in any orientation. All drive performance characterizations, however, have been done with the
drive in horizontal (disks level) and vertical (drive on its side) orientations, which are the two preferred mounting orientations.
10.2 COOLING
Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will
not exceed temperature conditions specified in Section 6.4.1, "Temperature."
The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disk
assembly (HDA). You should confirm that adequate heat removal is provided using the temperature measurement guidelines
described in Section 6.4.1.
Forced air flow may be required to keep temperatures at or below the temperatures specified in Section 6.4.1 in which case
the drive should be oriented, or air flow directed, so that the least amount of air flow resistance is created while providing air
flow to the electronics and HDA. Also, the shortest possible path between the air inlet and exit should be chosen to minimize
the travel length of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment.
If forced air is determined to be necessary, possible air-flow patterns are shown in Figure 11. The air-flow patterns are
created by one or more fans, either forcing or drawing air as shown in the illustrations. Conduction, convection, or other
forced air-flow patterns are acceptable as long as the temperature measurement guidelines of Section 6.4.1 are met.