IBM xSeries 236 8841, Руководство пользователя

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Notes:
a. When you turn on the server, check the hard disk drive status LEDs to verify
that the hard disk drive is operating properly.
If the amber hard disk drive status LED for a drive is lit continuously, that
drive is faulty and must be replaced. If the green hard disk drive activity LED
is flashing, the drive is being accessed.
b. If the server will be configured for RAID operation using the integrated SCSI
controller with RAID capabilities or an optional ServeRAID
™
controller, you
must configure the disk arrays before installing the operating system. See
the ServeRAID documentation on the IBM ServeRAID Support CD for
additional information about RAID operation and complete instructions for
using ServeRAID Manager.
Installing memory modules
The following notes describe the types of dual inline memory modules (DIMMs) that
the server supports and other information that you must consider when installing
DIMMs:
v The server supports 400 MHz, 1.8 V, 240-pin, single-stacked, double-data-rate
(DDR) II, registered synchronous dynamic random-access memory (SDRAM)
with error correcting code (ECC) DIMMs. These DIMMs must be compatible with
the latest PC3200 SDRAM Registered DIMM specification. For a list of supported
options for the server, go to http://www.ibm.com/us/compat/.
v
The server comes with a minimum of two 512 MB DIMMs, installed in slots 1 and
2. When you install additional DIMMs, be sure to install them in pairs. All the
DIMMs in a single pair must be the same size and type. You can mix compatible
DIMMs from various manufacturers.
Table 2. DIMM installation sequence
Pair DIMM connectors Pair DIMM connectors
1 1 and 2 2 3 and 4
3 5 and 6 4 7 and 8
v
The second pair does not have to contain DIMMs of the same size, speed, type,
and technology as the first pair.
v
The server supports Chipkill
™
memory if all DIMMs are type x4 and larger than
512 MB. Using any 256 MB DIMMs, or any DIMM that is not of type x4, disables
Chipkill memory.
Table 3. Chipkill memory supported configurations
DIMM type Minimum DIMM size
x4 512 MB
v
The server supports Online-Spare memory. See Table 4 for the supported
Online-Spare memory configurations.
Table 4. Online-Spare memory supported configurations
System
DIMM Pair DIMM connectors
Online-Spare
DIMM Pair DIMM connectors
1 1 and 2 2 3 and 4
3 5 and 6 4 7 and 8
Chapter 3. Installing options
33