Chapter 1 37
Item Seagate
Models ST9100823A ST9100824A ST9120821A
Capacity and Interface
Formatted Gbytes (512 bytes/sector)
Interface
60
Ultra ATA/100
100
SATA 1.5Gb/s
Ultra ATA/100
120
SATA 1.5Gb/s
Ultra ATA/100
Performance
Internal Transfer Rate (Mbits/sec) 386 461 461
Max. External Transfer Rate (Mbytes/sec) 100 150 100 150 100
Avg. Sustained Transfer Rate (Mbytes/sec) > > >
Average Seek (msec) 12.5 12.5 12.5
Average Latency (msec) 5.56 5.56 5.56
Multisegmented Cache 8192 8192 8192
Spindle Speed (RPM) 5400 5400 5400
Configuration/Organization
Discs/Heads 2/4 2/4 2/4
Bytes per Sector 512 512 512
Logical CHS 16383/16/63 16383/16/63 16383/16/63
Recording Method RLL 0,11 RLL 0,11 RLL 0,11
Reliability/Data Integrity
S.M.A.R.T. capable Yes Yes Yes
Nonrecoverable Read Errors per Bits Read
1 per 10
14
1 per 10
14
1 per 10
14
Service Life/Limited Warranty (years) 5/5 5/5 5/5
Power Requirements
+5 VDC +/-5% (amps typ operating) 1 1 1
Power Management (watts)
-Seek
-Read/Write
-Idle
-Standby
-2.3
-2
-0.92
-0.18
-2.2
-1.9
-0.8
-0.28
-2.2
-1.9
-0.8
-0.28
Environmental
Operating Temperature (
o
C)
5 to 55 5 to 55 5 to 55
Nonoperating Temperature (
o
C)
70 to -40 70 to -40 70 to -40
Operating Shock (Gs) @ 2 msec 250 250 250
Non Operating Shock (Gs) @ 1 msec 900 900 900
Acoustics,Idle (Bels-typ sound power) 2.4 2.4 2.4
