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IBM
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xSeries 450 Planning and Installation Guide
The four fans are shown in Figure 1-7 on page 14.
Two hot-swap power supplies with separate power cords.
Note
: For large configurations, redundancy is achieved only when connected
to a 220 V power supply. See 3.5, “Power considerations” on page 63 for
details.
Two hot-swap hard disk drive bays. Using the onboard LSI chipset, these
drives can be configured to form a RAID-1 disk array for the operating system.
The memory subsystem has a number of redundancy features, including
memory mirroring, as described in 1.7, “System memory” on page 17.
The layout of the front panel of the x450, showing the location of the drive bays,
power supplies and fans, is shown in Figure 1-13.
Figure 1-13 Front panel of the xSeries 450
Important:
Due to airflow requirements, fans should not be removed for
longer than two minutes. The fan compartments need to be fully populated
even if the fan is defective. Therefore, remove a defective fan only when a
new fan is available for immediate replacement.
Note:
To ensure adequate power, a UPS with a rating of RMB 5000 or
more is recommended.
Power button
Reset button
Power-on light
Hot-swap fans
USB port
System-error light (amber)
Information light (amber)
SCSI activity light (green)
Locator light (blue)
DVD/CD-RW drive
Hot swap
power supplies
Blank media
bay
Light Path Diagnostics
panel (pulls out)
Hot swap
drive bays
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