Installing Identification Labels - IBM Netfinity EXP300 Hardware Maintenance Manual

3. Unlock the door 3 and hold it at a 90 degree angle to the front of the enclosure;
then, lower the top of the door over the tab 1 on the top of the enclosure.
4. Push the bottom of the door until it snaps into place over the tab 2 on the
bottom of the enclosure.
5. Verify the settings for internal Option Switch 1 and internal Option Switch 2 on
the switch card.
Internal Option Switch 1 defines hard drive enumeration as either left-to-right
(Off) or top-to-bottom (On). Internal Option Switch 2 swaps the operation of the
general system error indicator with the power-on indicator. Both switches must
be set to On when a new expansion unit is placed in a tower.
Attention: A loss of data can occur if you change the position of internal Option
Switch 1 or internal Option Switch 3 after storing data on the hard drives. Refer
to "Conversion of EXP300 to a tower or from a tower" on page 25 if you
previously stored data on the drives and you now want to change the
configuration of your expansion unit from a rack to a tower orientation.
6. Install the components in the EXP300 that you removed

Installing identification labels

The EXP300 Rack-to-Tower Conversion Kit comes with SCSI ID labels for rack and
tower orientations. This kit also includes expansion unit ID labels for tower
orientations.
To install the identification labels:
1. Install the SCSI ID label:
The internal Option Switch 3 on the switch card determines whether you have a
single-bus (Off) or dual-bus (On) configuration. When internal Option Switch 3 is
set to Off, all 14 drive bays are on a single SCSI bus. When internal Option Switch
3 is set to On, two independent internal seven drive SCSI buses are created.
External SCSI Bus 1 maps to internal SCSI Bus 1 and external SCSI Bus 2 maps to
internal SCSI Bus 2. The EXP300 assigns the seven internal Bus-1 bays to SCSI IDs
Netfinity EXP300 Type 3531
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