Sun Microsystems SPARCcenter 2000 Service Manual page 193

Caution – Observe the following rules when replacing or installing disk drives.
!
•
Drives of different bus sizes, 8-bit vs. 16-bit "wide", cannot be combined
inside a single tray.
•
If you are connecting two different types of tray in a daisy chain, make sure
you have the SBus Fast/Wide Intelligent Differential SCSI Host Adapter
(DWIS/S) Expansion Card.
•
For Fast/Wide Differential disk drives, you must use a tray with address
switches that can be set for SCSI addresses 0 through 15.
•
If you are connecting two trays, and one tray contains 8-bit bus drives and
the second tray contains 16-bit Wide bus drives, the tray with the 8-bit bus
drives must have SCSI addresses 0 through 5 and the tray with the 16-bit
Wide bus drives must have SCSI addresses 8 through 13.
9.7.1 Removing the Disk Drive
Caution – Do not remove a disk drive from the differential SCSI disk tray if
!
doing so will leave only one disk drive in the tray. This will affect the air flow
in the tray and damage the remaining disk drive.
To remove a disk drive from the differential SCSI disk tray:
1. Unplug the three cables from the rear of the disk drive.
Figure 9-33 shows the three connectors that should have cables installed.
For the cables connected to the SCSI ID, SCSI data connector and power
connectors, grasp each cable connector on both sides and firmly, but gently,
pull the cable away from the connector at the rear of the disk drive. See
Figure 9-19.
2. Loosen three captive screws securing the drive to the bottom of the tray.
3. Use the plastic strap to remove the drive from the tray.
4. Remove the four Phillips screws that hold the drive and the plastic strap
to the mounting bracket. See Figure 9-34.
Storage Devices
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9-27