Table C-5 Supported Hard Drives - Sun Microsystems Ultra 60 Service Manual

TABLE C-4
Signal Name
TRACK0
WRITE_PROTECT
READ_DATA
HEAD_SELECT
DISK_CHANGE
C.1.8.3 Hard Drives
The system unit supports two SCSI hard drive capacities: 4.2-Gbyte and 9.1-Gbyte.
The 4.2-Gbyte hard drive is of the 1-inch form factor. The 9.1-Gbyte hard drive is of
the 1.6-inch form factor. All hard drives have a single connector configuration. A
drive bracket is used to mount the drive.
The 4.2-Gbyte Disk Drive Specifications, part number 802-7744, provides installation
instructions, power requirements, and performance data for the 4.2-Gbyte disk drive.
The 9-Gbyte Disk Drive Specifications, part number 802-7745, provides installation
instructions, power requirements, and performance data for the 9.1-Gbyte disk drive.
TABLE C-5
Form Factor
Dimension
1.00-inch
(2.54 cm)
1.63-inch
(41.3 cm)
C-18 Sun Ultra 60 Service Manual • August 2001
Diskette Drive Signals and Functions (Continued)
Supported Hard Drives
Disk Drive Capacity
4.2 Gbyte
9.1 Gbyte
Function
When active low, TRACK0 indicates that
the track zero sensor has been activated and
that the heads are over the outermost
cylinder.
When active low, WRITE_PROTECT
indicates that the inserted diskette is write-
protected and that drive write operations
are disabled.
When active, READ_DATA enables data
from the disk to be transferred to the host
through this signal line.
When low, HEAD_SELECT selects head 1.
When high, HEAD_SELECT selects head 0.
When low, DISK_CHANGE indicates that
the drive tape medium has been changed.
DISK_CHANGE is reset when a new disk is
inserted and an enable signal is sent by the
host.
lists the supported hard drives.
TABLE C-5
Wide RPM
Yes 7200
Yes 7200
Seek Time
9.5 ms
9.5 ms