HP StorageWorks 2500 Disk System Enclosure User Manual download pdf (Page 45)

5 Troubleshooting

This chapter provides information to help you troubleshoot DS2500 error conditions. Topics include:

•

Event monitor tools, page 45

•

EMU error condition report,page48

•

Status indicators, page 48

•

Catastrophic errors, page 52

Event monitor tools

The EMS Disk

Monitor (disk_em) and the HP High Availability Storage System Monitor (ds_ses_enclosure)

monitor the

disks in the DS2500. For information about these monitoring tools, see HP EMS Hardware

Monitors U

ser’s Guide at the following web site:

ttp://ww

w.docs.hp.com/en/diag.html

The monitoring tools report changes in disk status by sending an e-mail to the root account. These

messages provide early notification of a disk problem. Events reported include media errors, failed read

and write attempts, invalid commands, changed operating parameters, and failed diagnostics. Event are

assigned to one of the following severity levels:

• Critical—An event that causes data loss, host system downtime, or other loss of service. Continued

use the e

nclosure will negatively impact host system operation. Immediate action is required.

• Serious—Aneventthatcancausedataloss,hostsystemdowntime,orotherlossofserviceifleft

uncorrected. Host system and hardware operation may be adversely affected. The problem needs

repair a

ssoonaspossible.

• Warning—An event that could escalate to a serious condition if not corrected. Host system operation

should not be affected and normal use of the enclosure can continue. Repair is needed but at a

convenient time.

• Inform

ation—An event that is expected as part of the normal operation of the hardware. No action

is required.

Example 1 shows an example of a hardware event notification. The notification provides the following

types of information:

• Messa

ge data—Date and time the message was sent, the source and destination of the message,

and th

e severity level of the event.

• Event data—Date and time of the event, the host, event ID, name of the monitor, event number, event

class, severity level, hardware path,and associated OS error log entry ID.

• Desc

ription of Error—Narrative information indicating the component that experienced the event

and t

he nature of the event.

• Probable Cause / Recommended Action—The cause of the event and suggested steps toward a

solution. This information should be the first step in troubleshooting.

2500 Disk System user guide

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HP StorageWorks 2500 Disk System Enclosure User Manual Page 45

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