IBM Netfinity EXP300, Инструкция по установке и эксплуатации

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Chapter 1. Introduction
3
In the following figure, seven of the 14 bays contain drive CRUs, and seven bays
contain filler panels. To maintain proper cooling within your expansion unit, always
keep a filler panel in each drive bay that does not contain a drive CRU. For
information on installing and replacing drive CRUs, refer to “Chapter 3. Installing
and replacing devices,” on page 25.
Attention: Never hot-swap a drive CRU when its green activity light emitting diode
(LED) is flashing. Hot-swap a drive CRU only when its amber fault LED is lit (not
flashing) or when the drive is inactive with the green activity LED off (not flashing).
Bridge card bay
The bridge card is accessible from the front of the unit. You can replace the bridge
card CRU, but you must turn off the expansion unit before doing so. Refer to
“Replacing a bridge card” on page 30 for step-by-step instructions.
Attention: Never remove the bridge card while the expansion unit is turned on.
Refer to “Turning the expansion unit on and off” on page 21.
ESM and power supply bays
The following illustration shows the location of the environmental services monitor
(ESM) bays (for the hot-swap ESM boards) and the power supply bays where the hot-
swap power supplies are located.
Hot-swap ESM bays
The ESM boards provide a SCSI interface to the drives and monitor the
overall status of the expansion unit. Refer to “Replacing an ESM board” on
page 31 for more information.
Hot-swap drive bays Filler panel
Bridge card bay
0 1
2
3
45 6
7
8
9
Hot-swap power supply/fan bays
Hot-swap ESM bays