Compaq StorageWorks UltraSCSI RAID Enclosure (DS-BA370 Series) User's Guide (EK-BA370-UG. C02, September 1998)

Enclosure Blowers

8–2 UltraSCSI RAID Enclosure

Figure 8–1 Enclosure Blower Assembly Locations

Enclosure temperature sensors (see Chapter 3) detect overtemperature

conditions or blower malfunctions and alert the user to the problem.

Simultaneously, the EMU causes all operational blowers to operate at

high-speed, increasing air flow through the enclosure to increase

cooling.

• If an overtemperature condition is caused by either the intake air

temperature or exhaust air temperature (backplane) being too

high, the EMU initiates routines that can cause a power shut

down.

• Removing a blower significantly changes the air flow pattern

within the enclosure. The EMU initiates a routine that causes a

power shut down to occur after approximately 8 minutes.

• If two or more nonoperating blowers (that is, not operating or

rotating too slowly) are in the same blower bank (see Figure 8–1),

the EMU initiates a routine that causes a power shut down to

occur after approximately 8 minutes.

Figure C

ALLOUTS

Bank A

A1. Blower 1

A2. Blower 2

A3. Blower 3

A4. Blower 4

Bank B

B5. Blower 5

B6. Blower 6

B7. Blower 7

B8. Blower 8

CXO5494B