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### To Configure an Array

Caution - Before you reconfigure an existing array, note that any information you enter and save at this page overwrites the existing information for the array.

1. Select the Configuration/Array selection tab.
2. Select a storage array in the table and click Configure.

You can also configure a Fibre Channel array settings from this page. See To Configure Fibre Channel Port Settings.

3. Type a description of the array in the Description text field.

The maximum number of characters allowed is 39.

4. Select or enable the following:

Note - You may need to click on the [More...>>] button in the Array Properties table to view more configuration options.

- Segment Size

You can choose a LUN segment size of 4 Kbytes, 8 Kbytes, 16 Kbytes, 32 Kbytes, or 64 Kbytes. In a RAID-5 configuration, the segment size is the size of the data striped across volumes.

- Read Ahead cache mode

Select On to enable it or select Off to disable it.

- Disk Scrubbing (firmware Version 3.1 only)

Select enabled or disabled.

- Disk Reconstruction Rate

Selecting high might impact system I/O performance; selecting low might increase system I/O performance.

- Failover Mode

Select Explicit LUN Failover or Implicit LUN Failover.

- Cache Mode

off - disable the cache mode.

auto - use write-behind or write-through caching depending on I/O characteristics.

writebehind - write all read and write operations to cache.

writethrough - write data to cache and then to disk.

- Number of Array Hot Spares (Firmware 3.1)

Select the number of available hotspare drives in the array.

5. Click Save.