## Storage Array Details Page

This page displays details for the selected storage array, including subreport information.

Field | Indicates
--- | ---
Name | The name of the array as assigned by the system.
Health | The current health status of the array: OK Other Error Starting In Service No Contact Lost Communication Damaged Supporting Entity Error Rebooting Restoring Array Defaults Invalid Configuration
Array Hot Spares | The number of hot spares per tray: 0 to 8.
Segment Size | The segment size in kilobytes: 4, 8, 16, 32 or 64. The segment size must be the same for all virtual disks in an array. After a virtual disk exists on any tray, all virtual disks on all trays must have the same segment size as that virtual disk. When you create a storage profile, plan the segment size because you cannot create pools with different segment sizes on the same array. You can configure a system with unused disks in which no virtual disks can be configured if the pools' profiles do not have the same segment size.
Read-Ahead Mode | Whether the read-ahead attribute is enabled or disabled. This mode must be the same for all virtual disks in an array. After a virtual disk exists on any tray, all virtual disks on all trays must use the same mode. Plan the use of the mode, because you cannot have pools with different modes on the same array. You can configure a system with unused disks in which no virtual disks can be configured if the pools' profiles do not match the Read-Ahead mode.
Disk Reconstruction Rate | The current setting of the disk reconstruction rate: Low, Medium, or High. The higher the rate, the more performance is affected.
Failover Mode | The current setting for the failover mode. This option is fixed at mpxio (multipath transport input output).
Cache Mode | The method used for write caching: Auto (default), WriteBehind, WriteThrough, and Off. Write caching improves performance for applications, because data is written to fast memory as opposed to slower disk storage devices. The default setting, Auto, enables write-behind caching as long as there are no FRU failures.
Diagnostic Mode | The current diagnostic mode. This setting requires additional processing overhead and should be used selectively. The diagnostic mode settings are: BEFIT (default) - This is an online loop diagnostic mode that maintains the availability of backend drives at all times by detecting, isolating, and correcting faulty field replaceable units. Off - The diagnostic mode setting is inactive. Active - The diagnostic mode setting is active and operational. Passive - The diagnostic mode is set to record critical problems but not minor circumstances.
Disk Scrubbing | The disk scrubber feature constantly reviews the volumes for consistency. As a result, you will see the disk LEDs flash regardless of data input and output. Enable (default) - Activates disk scrubbing. Enabling disk scrubbing requires additional processing overhead and should be used selectively. Disabled - Disables disk scrubbing. Disk scrubber is enabled by default. .Note: Disabling the disk scrubber is not recommended. It may lead to latent disk block errors that could cause multiple disk failures and loss of data.

The subreports table provides additional related information. Click an item to see its details.

Type | Quantity
--- | ---
Disks | The number of disks in this array.
Trays | The number of trays in this array.
Virtual Disks | The number of virtual disks in this array.
Volumes | The number of volumes associated with this array.

### Related Topics

- About Arrays and Trays
- Managing Storage Arrays