Seagate ST33000651SS Constellation ES SATA Product Manual - Page 10

Drive specifications

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3.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate the following drive models: ST32000644NS ST31000524NS ST3500514NS 3.1 Specification summary tables The specifications listed in the following tables are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual. Table 1: Drive specifications summary Drive specification Formatted (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density, KBPI (Kb/in max) Track density, KTPI (ktracks/in avg.) Areal density, (Gb/in2 avg) Spindle speed (RPM) Internal data transfer rate (Mb/s max) Sustained data transfer rate OD (MB/s max) I/O data-transfer rate (MB/s max) ATA data-transfer modes supported Cache buffer Weight: (maximum) Average latency Power-on to ready (sec max) Standby to ready (sec max) ST32000644NS 2TB 3,907,029,168 8 4 512 63 16 16,383 1421 240 347 7200 1300 140 300 PIO modes 0-4 Multiword DMA modes 0-2 Ultra DMA modes 0-6 64MB 710g (1.565 lb) 4.16ms 15 15 ST31000524NS 1TB 1,953,525,168 4 2 32MB 640g (1.411 lb) 10 10 ST3500514NS 500GB 976,773,168 2 1 610g (1.345 lb) 7 7 4 Constellation ES Serial ATA Product Manual, Rev. G

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4
Constellation ES Serial ATA Product Manual, Rev. G
3.0
Drive specifications
Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal
power. For convenience, the phrases
the drive
and
this drive
are used throughout this manual to indicate the
following drive models:
3.1
Specification summary tables
The specifications listed in the following tables are for quick reference. For details on specification measure-
ment or definition, see the appropriate section of this manual.
Table 1:
Drive specifications summary
ST32000644NS
ST31000524NS
ST3500514NS
Drive specification
ST32000644NS
ST31000524NS
ST3500514NS
Formatted (512 bytes/sector)*
2TB
1TB
500GB
Guaranteed sectors
3,907,029,168
1,953,525,168
976,773,168
Heads
8
4
2
Discs
4
2
1
Bytes per sector
512
Default sectors per track
63
Default read/write heads
16
Default cylinders
16,383
Recording density, KBPI (Kb/in max)
1421
Track density, KTPI (ktracks/in avg.)
240
Areal density, (Gb/in
2
avg)
347
Spindle speed (RPM)
7200
Internal data transfer rate
(Mb/s max)
1300
Sustained data transfer rate OD
(MB/s max)
140
I/O data-transfer rate
(MB/s max)
300
ATA data-transfer modes supported
PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer
64MB
32MB
Weight: (maximum)
710g (1.565 lb)
640g (1.411 lb)
610g (1.345 lb)
Average latency
4.16ms
Power-on to ready (sec max)
15
10
7
Standby to ready (sec max)
15
10
7