Specifications

Power Subsystem
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An LED above each hard drive displays the status of that hard drive. Table 1-3 shows the
hard drive LED status.
The SCSI backplane boardset consists of two separate boards: the SCSI backplane board
and the SCSI-accessed fault-tolerant enclosures specification (SAF-TE) board. The SCSI
backplane board provides power distribution and SCSI interfacing of the hard drives.
The SAF-TE board provides SAF-TE features and hard drive failure indicators.
Power Subsystem
The SGI 1450 server uses a universal input-switching power subsystem (PSBS). This
subsystem provides up to 630 watts DC. The subsystem also minimizes the RMS current
drawn from each AC line by providing power factor corrected AC input. The chassis can
be configured with one, two, or three 350-watt power supply modules. Each module is
designed to minimize electromagnetic interference (EMI) and radio frequency
interference (RFI).
Table 1-3 Hard Drive LED State Status
LED State Status
Solid green The hard drive is present and powered on.
Flashing green The hard drive is active.
Solid yellow There is an asserted fault status on the hard drive.
Flashing yellow A rebuild of the hard drive is in progress.
Off The hard drive is not powered on.