4.1.7.
Power Requirements and Consumption
The specifications listed in Table 3 apply to all operational modes (except Secure Erase) while
Termination Power (TERMPWR) is set to OFF.
The FFD input voltage is +5VDC, with a tolerance of
±
0.5V.
Table 3 describes the power consumption based on capacity and disk type (80-pin connector).
Table 3: FFD 3.5” Ultra320 SCSI Power Consumption (Typical)
Disk Type
80-Pin Connector
Disk Capacity (GB)
Idle Mode
Read/Write Mode
4
1.1 A
5.5 W
1.3 A
6.5 W
64
1.2 A
6.0 W
1.4 A
8.4 W
112
1.2 A
6.0 W
1.4 A
8.4 W
160
1.3 A
6.5 W
1.5 A
7.5 W
176
1.3 A
6.5 W
1.6 A
8.0 W
224
1.2 A
6.0 W
1.4 A
8.4 W
320
1.3 A
6.5 W
1.5 A
7.5 W
352
1.3 A
6.5 W
1.6 A
8.0 W
4.1.8. Memory
Capacities
Table 4 describes the available capacities for the FFD.
Table 4: FFD 3.5” Ultra320 SCSI Available Capacities
Unformatted Disk
Capacity (GB)
1
Formatted Disk Capacity
(No. of Blocks)
Cylinders Heads
Sectors
(Blocks)
Bytes/
Block
1 1980498
1934
16
64
512
2 3993764
3900
16
64
512
4 8020296
7832
16
64
512
8 16073359
15697
16
64
512
12 24126423
23561
16
64
512
16 32179487
31425
16
64
512
20 40232550
39290
16
64
512
10
Product Specification and User Manual FFD 3.5" Ultra320 SCSI
43-PS-0305-00 Rev. 2.0
