Controller Installation

2.3.6Checking Tier Status and Configuration

Use the tier command to display your current tier status. Figure 2–5illustrates the status of a system containing 80 drives on 8 tiers with both parity modes of 8+1 and 8+2 tiers. The plus sign (+) adjacent to the tier number indicates that the tier is in 8+2 mode.

15000 [1]: tier

 

Tier Status

 

Capacity

Space Available

Disk Status Lun List

Tier Owner (Mbytes)

(Mbytes)

-----------------------------------------------------------------

1

+

1

280012

280012

ABCDEFGHPS

2

 

1

280012

280012

ABCD FGHPS

3

 

1

280012

280012

ABCDEFGHPS

4

 

1

280012

280012

ABCDEFGHPS

5

+

1

280012

280012

AB.DEFGHPS

6

1

280012

280012

ABCDEFGHPS

7

+

1

280012

280012

ABCDEFG?PS

8

1

280012

280012

ABCDEFGHPS

Automatic disk rebuilding is Enabled

System rebuild extend: 32 Mbytes

System rebuild delay: 60

System Capacity 2240096 Mbytes, 2240096 Mbytes available.

Figure 2–5Tier Status Screen

Each letter under the “Disk Status” column represents a healthy drive at that channel (as shown in Figure 2–5).Verify that all drives can be seen by the controller.

“Unhealthy” drives appear as follows:

A blank space indicates that the drive is not present (or detected) at that location.

A period (.) denotes that the disk was failed by the system.

A question mark (?) indicates that the disk has failed the diagnostics tests or is not configured correctly.

The character “r” indicates that the disk at that location is being replaced by a spare drive. After entering the tier command, perform the following steps if necessary:

1.If a drive is not displayed at all (that is, it is “missing”), check to ensure that the drive is properly seated and in good condition. To search for the drive, enter:

disk scan<Enter>

2.If the same channel is missing on all tiers, check the cable connections for that channel.

3.If “automatic disk rebuilding” is not enabled, enable it by entering:

tier autorebuild=on<Enter>

4.To display the detailed disk configuration information for all of the tiers (Figure 2–6)enter: tier config<Enter>

007-5510-002

19

Page 33
Image 33
APC 15000 RAID manual Checking Tier Status and Configuration, 5Tier Status Screen