IBM System Storage DS4000, Руководство по техническому обслуживанию аппаратной части

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Note: If your storage server is a Model 1RU, there is only one RAID controller.
There is a blank panel in the second RAID controller opening. The blank
panel must remain in place to maintain proper cooling.
RAID controller
The storage server comes with one or two hot-swap RAID controllers. Each
RAID controller contains two ports for Gigabit Interface Converters
(GBICs) which connect to the fibre channel cables. One GBIC connects to a
host system. The other GBIC is used to connect additional expansion units
to the storage server.
Each RAID controller also contains a battery to maintain cache data in the
event of a power failure. For more information, see the appropriate IBM
TotalStorage DS4000 Installation and User’s Guide.
Important: The replacement RAID controller CRU does not come with a
RAID controller cache battery installed. You must remove the cache battery
that is inside the existing RAID controller that you are replacing, and
install that battery inside the replacement RAID controller CRU. For the
steps to remove and replace the battery, see the appropriate IBM
TotalStorage DS4000 Installation and User’s Guide.
Hot-swap fans
The storage server has two interchangeable hot-swap and redundant fan
CRUs. Each fan CRU contains two fans. If one fan CRU fails, the second
fan CRU continues to operate. You must install both fan CRUs to maintain
proper cooling within your storage server, even if one fan CRU is not
operational.
Hot-swap power supplies
The storage server comes with two hot-swap power supplies. You must
install both power supplies to maintain proper cooling.
Interface ports and switches
Figure 26 on page 39 shows the ports and switches on the back of the storage
server.
Hot-swap fan bays
Hot-swap
power supplies
Raid controllers
Figure 25. FAStT200 and FAStT200 HA storage server bays (back view)
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IBM TotalStorage DS4000: Hardware Maintenance Manual