
Chapter 4
SA7x Controls and Indicators
This chapter describes the controls and indicators on the front and rear panels of the SA7x
enclosure.
4.1 SA7x Front Panel Controls and Indicators
Figure 4–1 shows the front panel of the SA7x enclosure. The operator control panel (OCP),
located along the top edge of the enclosure, contains the unit select switch and four identical
sets of controls and indicators. Each set of controls and indicators is dedicated to one of the
four disk drive positions in the enclosure.
The controls and indicators for a disk drive position can be used when a disk drive is powered
up. Unless a drive is installed in a disk drive position and powered up, the controls and
indicators for that position do not operate.
Serial number labels, corresponding to the RA7x disks and their disk positions, must be
adhered to the front cover of the SA7x enclosure. Refer to Figure 4–1 for the location of these
serial number labels.
SA7x Controls and Indicators 4–1
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