Specifications

SCSI to SATA RAID Subsystem | Administrator’s Manual Enclosure Management | en 143

Bosch Security Systems F.01U.027.802 | V1 | 2006.11

9 Enclosure Management

This chapter discusses the configuration options related to enclosure monitoring. Each func-

tion is given a brief explanation as well as a configuration sample. Terminal screens will be

used in the configuration samples. Some of the operations require basic knowledge of RAID

technology and are only recommended for an experienced user.

9.1 Enclosure Monitoring

9.1.1 Enclosure Devices

Event Triggered Operations

Fig. 9.1 Event Triggered Operations

Select “View and Edit Peripheral Devices” on the Main Menu and press [ENTER]. Choose “Set

Peripheral Device Entry”, press [ENTER], then select “Event Trigger Operations” by pressing

[ENTER]. The event trigger menu displays.

• The Operations

To reduce the chance of data loss, the controller/subsystem automatically commences

the following actions to prevent loss of data:

a. Switches its caching mode from write-back to write-through

b. Flushes all cached data

• The Trigger

The mode switching and cache flush operations can be triggered by the detection of the

following conditions:

a. BBU low or failed:

If battery fails or is under-charge, the unfinished writes cannot be supported if

power outage occurs.

b. Power supply failure

c. Fan failure

d. Temperature exceeds threshold

If critical conditions occur, such as the enclosure component failure, chance of sys-

tem downtime will increase and it is best to temporarily disable write-back caching.

NOTICE!

All figures in this chapter are showing examples using the management hyper terminal screen.