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Airflow Requirements
Option/Address
Selection
Note
2·6 Product Installation
The disk drive must be installed such that the air
temperature surrounding the disk drive is maintained
within the limits specified in chapter 1.
Airflow is required to assure disk drive reliability.
Better reliability will be achieved with lower operating
temperatures. The disk drive can be cooled by either forced
air or natural cooling. Forced air may be necessary if the
disk drive is located within a cabinet or other enclosure.
If
forced air cooling is not used, the disk drive must be
located such that internal heat is adequately removed from
the drive and no outside heat sources raise the operating
temperature above that specified in chapter 1.
As a guideline, the estimated front to back airflow to
prevent exceeding the maximum operating temperature at
a 50°C ambient temperature is 5 CFM. This is a function
of the specific airflow pattern inside the cabinet where the
disk drive is installed. This airflow estimate is to serve as a
guideline.
As an additional guideline, the airflow should be adjusted
to prevent the temperature measuring points on the HDA
case from exceeding the limits shown in figure 2-4.
The drive options, SCSI address, and on-board terminator
+
5V source are selected by shorting jumpers across several
pin-sets located on the drive electronics/controller PCA.
Figure 2-5 and tables 2-1 and 2-2 show the location and
jumper setups for the supported options.
If
you remove any of the shorting jumpers, save them for
future use.
DRAFT
10/24/90 12:38
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