3–1
3 Maintaining Control Modules
A PS6000 array includes two hot-swappable control modules. One functioning
control module is required for array operation. You access control modules from
the rear of the array.
Each control module includes multiple Ethernet ports, a serial connector (for use
if there is no network access to the array), and a field-replaceable micro SD card
(running PS Series firmware).
Cache and NVRAM batteries are not field replaceable. For information about
replacing a cache or NVRAM battery, contact your PS Series service provider.
Control Modules
A PS6000 array includes two Type 7 control modules, which have one serial port
and four Ethernet ports.
Figure 3-1: Type 7 Control Module
Only one control module is active (serving network traffic) at one time. The
secondary (redundant) control module mirrors cache data from the active control
module. If the active control module fails, the secondary will take over network
operations.
Do not mix control module types in an array. Always make sure both control
modules are the same type and color. See the latest PS Series Release Notes for
information about other supported control modules.
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