Temperature Checkout; Recovering Bios - IBM TotalStorage NAS 300 User Reference

Temperature checkout

Cooling of the NAS Gateway 300 is important for correct operation and reliability.
Ensure that:
v Each of the drive bays has either a drive or a filler panel installed.
v Each of the power-supply bays has either a power supply or a filler panel
v The top cover is in place during normal operation.
v There is at least 50 mm (2 in.) of ventilated space at the sides of the NAS
v The top cover is removed for no longer than 30 minutes while the NAS Gateway
v The processor housing cover covering the processor and memory area is
v A removed hot-swap drive is replaced within 2 minutes of removal.
v Cables for optional adapters are routed according to the instructions provided
v The fans are operating correctly and the air flow is good.
v A failed fan is replaced within 48 hours.
In addition, ensure that the environmental specifications for the NAS Gateway 300
are met. Refer to "Products and features" in Chapter 2 of the hardware installation
guide.
For more information on specific temperature error messages, see "Temperature
error messages" on page 150.

Recovering BIOS

If your BIOS has become corrupted, such as from a power failure during a flash
update, you can recover your BIOS using the recovery boot block and a BIOS flash
diskette.
Note: You can obtain a BIOS flash diskette from one of the following sources:
The flash memory of the NAS Gateway 300 contains a protected area that cannot
be overwritten. The recovery boot block is a section of code in this protected area
that enables the NAS Gateway 300 to start up and to read a flash diskette. The
flash utility recovers the system BIOS from the BIOS recovery files on the diskette.
To recover the BIOS:
installed.
Gateway 300 and 100 mm (4 in.) at the rear of the NAS Gateway 300.
300 is operating.
removed for no longer that 10 minutes while the NAS Gateway 300 is operating.
with the adapters (ensure that cables are not restricting air flow).
v Download a BIOS flash diskette from the Web site at:
www.ibm.com/storage/support/nas
v Contact your IBM service representative.
1. Shut down (see "Shutting down and powering on the NAS Gateway 300" on
page 87) the NAS Gateway 300 and peripheral devices. Disconnect all
external cables and power cords. Remove the cover.
2. Locate the boot-block jumper block (J28) on the system board.
3. Place a jumper on pins 2 and 3 to enable BIOS backup page.
4. Insert the BIOS flash diskette into the diskette drive.
5. Reconnect all external cables and power cords.
Chapter 8. Troubleshooting
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