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PS6000 Hardware Maintenance

Each control module has four ports: Ethernet 0, Ethernet 1, Ethernet 2, and

Ethernet 3. The active control module can use a network interface only if there is a

cable connected to the port on the active control module. Therefore, you should

connect a cable to the network interface port on each control module to make sure

that both control modules can access an interface.

A PS series array provides two types of network failure protection:

•

Network connection failover. If multiple network interfaces are configured

and one network interface fails, iSCSI initiators that were connected to the

failed interface can reconnect to the group IP address and be redirected to a

functioning interface. For example, in a single control module array, if

Ethernet 0 and Ethernet 1 are connected to a network, and Ethernet 0 fails,

initiators that were connected to Ethernet 0 can be redirected to Ethernet 1.

•

Control module failover. In a dual control module array, if the active control

module fails, the secondary automatically takes over and becomes active. If a

cable is connected to the port on the newly active control module, network I/O

can continue through that interface. Control module failover is transparent to

applications, but iSCSI initiators must reconnect to the group IP address.

Maintaining Control Module Firmware

A PS6000 array includes two control modules, each with a micro SD card running

the array firmware. You should run the latest firmware version to take advantage

of new product features and enhancements.

Caution:

Both control modules must be running the same firmware version;

otherwise, only one control module will be functional. When you use

the

update

to the same firmware version.

Group members should run the same firmware version; otherwise, only the

functionality common to all versions will be available in the group. See the

PS Series Release Notes for information about mixed-firmware groups.

If you are upgrading a control module or replacing a failed micro SD card, make

sure to order the correct PS Series firmware version. If you are replacing a failed

control module, remove the micro SD card from the failed control module and

install it in the replacement control module. This will make sure that you keep the

correct firmware.

3–4

command procedure, both control modules are updated

Maintaining Control Modules