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Drive & Eclosure Management
57
Before you can use the disk drive again, you must clear its metadata. SeeAppendix F section
6.1.2, ”Clearing Metadata from a Disk Drive”, on page 54.
6.1.8 Testing a Disk Drive
This function issues a Test Unit Ready (TUR) command to the selected disk drive. This just tells you that
the disk drive can respond, but it still may not be functioning properly.
To test a disk drive:
1 From SAM, select Manage Galaxy 65 Subsystem > Utilities > Disk Drive Utilities >Test Unit Ready.
The Test Unit Ready page displays listing all devices.
2 Select the disk drive you want to test.
3 Click Test Unit Ready.
If the TUR was successful, Test Unit Ready STATUS OK displays.
If the TUR was not successful, a failure message displays.
6.2 Managing Enclosures
An enclosure management processor (EMP) is a device in the enclosure from which the Galaxy 65
Subsystem can inquire about the enclosure’s environmental conditions such as temperature, power
supply and fan status, and the presence or absence of disk drives. The Galaxy 65 Subsystem can also
tell the EMP about RAID activities such as disk drive rebuilds and failed disk drives.
If you have only one EMP, the configuration settings are automatically enabled when the Galaxy 65
Subsystem is installed. No changes are required to the default configuration settings to support the EMP.
If you have more than one EMP, you must set up the EMP LUNs as described in the next section.
You can control the following functions for EMPs:
• EMP LUN (see page 57)
• Additional EMP setting (see page 58):
– Polling interval
6.2.1 Setting the EMP LUN
If you have only one EMP, the configuration settings are automatically enabled when the Galaxy 65
Subsystem is installed.
If you have more than one EMP, you must set up the EMP LUNs as described in this section.
The Galaxy 65 Subsystem allows in-band access to the EMP in the disk enclosure under the Galaxy 65
Subsystem’s target ID using direct EMP commands. You can set an EMP LUN to any value between 0
and 63, except where it would conflict with a previously assigned LUN (EMP, partition, or management).