User guide

Powering Up the SS8460
96-30052-001 Rev. A4 DataDirect Networks StorageScaler 8460 User Guide | 32
2.7.1 Power Connections
Each SS8460 ships with two fully redundant PCMs.
CAUTION : Use only the power cables supplied with the enclosure. Do NOT use
another type of cord or extension cords. If you require additional power
cables, please contact your DDN sales representative.
1. Verify that the power switch on both PCMs is in the OFF position (Figure 37).
2. Then connect the power cables from the SS8460 to the appropriate power outlets. For
maximum redundancy, connect the two power supplies to different AC circuits.
2.7.2 Single SS8460 Power Up Procedure
1. Turn the switch on each PCM to the ON position.
2. Wait approximately 1 minute for all the disks to become ready.
3. Power on and boot the storage controllers.
2.7.2.1 Power Down Procedure
1. Stop all I/O to the SS8460.
2. Power down the storage controllers.
3. Power down the SS8460 by turning off the switches on the PCMs.
2.7.3 Multiple SS8460 Power Up Procedure
CAUTION : The power up order is critical for each of the expansion enclosures to
properly be seen by the previous unit in the chain.
For systems with expansion enclosures attached, the enclosure last in
the chain should be powered up first, followed by the other enclosures
with the master unit being turned on last.
Figure 37. A Power and Cooling Module
Power Switch