Seagate SkyHawk AI Serial ATA Product Manual, Rev. C
8
2.3
Recording and interface technology
2.4
Start/stop times
Power-on to ready time is based on typical operating conditions, default full current spin-up profile, and clean shutdown prior to
measurement. To ensure a clean shutdown a Flush Cache, Standby, or Standby Immediate command must be completed before
removal of interface power.
An unexpected power loss event, spin up at cold or hot temperature extremes may cause the drive to exceed the typical and max
time to ready by 5 to 20 seconds. Extended time to ready is dependent on cache state and environmental conditions prior to the
unexpected power loss and during the subsequent power on.
2.5
Power specifications
The drive receives DC power (+5V or +12V) through a native SATA power connector. See
.
2.5.1
Power consumption
Power requirements for the drives are listed in
. Typical power measurements are based on an average of drives tested, under
nominal conditions, using 5.0V and 12.0V input voltage at 25°C ambient temperature.
Interface
Serial ATA (SATA)
Recording method
Perpendicular
Recording density, KBPI (Kb/in max)
2499
Track density, KTPI (ktracks/in, 0 Skew)
487
Areal density (Gb/in
2
, @ 0 skew mid-disk)
1215
Spindle speed (RPM) (± 0.2%)
7200
Internal data transfer rate (Mb/s max)
2169
Sustained data transfer rate (MiB/s max)
234 (245 MB/s max)
I/O data-transfer rate (MB/s max)
600 (Ultra DMA mode 5)
Power-on to Ready (sec) (typ/max)
23/30
Standby to Ready (sec) (typ/max)
23/30
Ready to spindle stop (sec) (max)
20
Table 2
DC Power Requirements (5-disk models)
Power Dissipation
Avg (25°C) (Watts)
Avg 5V typical (Amps)
Avg 12V typical (Amps)
Spinup (max)
2.0A
Idle
1
1.
During periods of drive idle, some offline activity may occur according to the S.M.A.R.T. specification, which may increase acoustic and power to operational
levels.
* Based on IDEMA 3 Stream workload
7.76
0.325
0.512
Operating
10.09
0.542
0.6144
Standby
0.96
0.185
0.003
Sleep
0.96
0.185
0.003