User guide

Chapter 9 Operation and Maintenance

> 9.5 Troubleshooting

ETERNUS DX60/DX80/DX90 Disk storage system User Guide

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P3AM-3042-06ENZ0

Refer to the following sections for details on these functions.

• "1.3.4 RAID Migration" (page 42)

• "1.3.5 Logical Device Expansion" (page 44)

• "1.3.6 LUN Concatenation" (page 45)

■ When I/O access is slow

Check the following:

• Check that the ambient temperature does not exceed the operating environment conditions. If

so, Nearline SAS disk performance may be reduced.

• Click the icon of each part in the Storage System Status screen of GUI to check if an

abnormality is detected in ETERNUS DX60/DX80/DX90 parts.

If an abnormality is detected, contact your maintenance engineer.

• Check the path status.

- When using ETERNUS Multipath Driver, start ETERNUS Multipath Manager.

For Windows®, click [Start] - [Program] - [ETERNUS Multipath Driver] - [ETERNUS

Multipath Manager] to start ETERNUS Multipath Manager.

If an abnormality is detected in a path, refer to ETERNUS Multipath Driver manuals and

follow the direction given in the manuals.

Figure 9.1 ETERNUS Multipath Manager Window

- When not using ETERNUS Multipath Driver, use the path management tool and check the

path status that each software provides, and handle the problem if necessary.

• Check the loading of the ETERNUS DX60/DX80/DX90. If the load is out of balance because

of operation content changing and so forth.

• When the cause is not identified, contact your maintenance engineer.

Refer

"ETERNUS DX60/DX80/DX90 Web GUI User Guide"

ETERNUS Multipath Driver manuals