Saf-Te Disk I/O Card - Gateway 850 User Manual

SAF-TE Disk I/O card

Warning
The SAF-TE Disk I/O card provides the built-in environmental and system status
monitoring, as well as host connectivity to the drives. It also houses the
switches for setting SCSI IDs, VT-100 communication protocols, and drive
spinup options.
This card contains two SAF-TE processors (SEPs) that continuously monitor the
enclosure for temperature status, fan status, power supply status, and SCSI
channel status. The SEPs are responsible for reporting environmental conditions
and system status to the front bezel LEDs, audible alarms, external monitoring
software, and third-party monitoring software. Using the SAF-TE specification
protocol version 1.0, the SEPs communicate through the SCSI bus to report on
enclosure status and communicate information about the associated host
system.
At power up, the SAF-TE processors read the SCSI switch settings and configure
the system for the appropriate addresses. They then execute firmware from the
on-board flash memory and perform a self-test. The firmware is flash
upgradeable using the SAF-TE RS-232 Service port located below the I/O card
slots at the rear of the enclosure. The firmware also contains the necessary
functions for enclosure management.
Specific switch settings are discussed later in "Setup and Installation" on
page 13.
Channel 1
Termination Jumper
The SAF-TE Disk I/O card is not hot swappable. You must
turn off the enclosure prior to removing or replacing this
card.
Channel 2
Termination Jumper
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Components
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A A R S B D R
0 1 D 0 1 D L M
UP (Off -1)
1 2 3 4 5 6 7 8
DOWN (On -0)
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