Controller Installation

Figure 2–7Dual Controller Configuration

If you require multi-pathing to the LUNs, enable cache coherency. If you do not require multi-pathing, disable cache coherency.

To enable/disable the cache coherency function, enter the following (ON enables, OFF disables):

dual coherency=onoff<Enter>

You may change the label assigned to each unit. This allows you to uniquely identify each unit in the system. Each unit can have a label of up to 31 characters long.

1.To change the label, enter:

dual label<Enter>

2.Select which unit you want to re-label (see Figure 2–8).

3.When prompted, type in the new label for the selected unit. The new name is displayed.

15000 [1]: dual label

Enter the number of the Unit you wish to rename.

LABEL=1 for Unit 1, Test System[1]

LABEL=2 for Unit 2, Test System[2]

Unit: 1

Enter a new label for Unit 1, or DEFAULT to return to the default label.

Up to 31 characters are permitted.

Current Unit name: Test System[1]

New Unit name: System[1]

15000 [1]:

Figure 2–8Labeling a Controller Unit

2.3.8Configuring the Storage Arrays

When you have determined your array configuration, you need to create and format the LUNs. You have the option of creating a 32-bit or a 64-bit address LUN.

In the example below, 2 LUNs (32-bit addressing) are created:

LUN 0 on Tiers 1 to 8 with capacity of 8192MB each.

LUN 1 on Tiers 1 and 2 with capacity of 8192MB each.

NOTE : You may press e at any time to exit and cancel the command completely.

007-5510-002

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APC 15000 RAID manual Configuring the Storage Arrays, 7Dual Controller Configuration