Seagate Exos Enterprise X20, Руководство по эксплуатации продукта

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Seagate Exos X20 SATA Product Manual, Rev. B 7
www.seagate.com Drive specifications
2.0 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 Exos X20 SATA drive
models.
2.1 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 2 Drive specifications summary
Drive specification ST20000NM007D,
ST20000NM000D
ST18000NM003D,
ST18000NM008D
Formatted (512 bytes/sector)* 20TB 18TB
Guaranteed sectors (see Section 2.2 )
Heads 20 18
Disks 10
Bytes per logical sector 512
Bytes per physical sector 4096
Recording density, KBPI (Kb/in max) 2470
Track density, KTPI (ktracks/in avg.) 482
Areal density, (Gb/in
2
avg) 1146
Spindle speed (RPM) 7200
Internal data transfer rate (Mb/s max) 2899
Sustained data transfer rate OD (MiB/s max) 272 (285 MB/s max)
I/O data-transfer rate (MB/s max) 600
ATA data-transfer modes supported PIO modes 0–4
Multiword DMA modes 0–2
Ultra DMA modes 0–6
Cache buffer 256MB (262,144KB)
Weight: (maximum) 680g (1.499 lb)
Average latency 4.16ms
Power-on to ready (sec) (typ/max) 25/30
Standby to ready (sec) (typ/max) 25/30
Startup current (typical) 12V (peak) 2.6A
2.0A (optional configuration through Smart Command Transport)
Voltage tolerance (including noise) 5V ± 5%
12V ± 10%
Operating temperature
†
5° to 60°C (Drive Reported Temperature)
Non-Operating temperature –40° to 70°C (Ambient Temperature, see sections 2.6.1 and 2.14 )