Western Digital Purple PR1000M, Техническое справочное руководство

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S
PECIFICATIONS PR1000M
4 RELEASED 5/8/17 (WD CONFIDENTIAL) 2679-800020-A03
2.0 S
PECIFICATIONS
2.1 Performance Specifications
2.2 Physical Specifications
Specifications represented are of a typical production drive and may be subject to
change or variation without notice
.
Rotational Speed 5400 RPM Class
Data Transfer Rate
1
- Buffer to Host
- Host to/from Disk
6 Gb/s maximum
145 MB/s sustained (typical)
Buffer Size 64 MB
Error Rate - Unrecoverable <1 in 10
14
bits read
Spindle Start Time
- From Power-on to Drive Ready
- From Power-on to Rotational Speed
14.5s average
9s average
Spindle Stop Time <15s average
Load/Unload Cycles (controlled unload at ambient
condition) 300,000
1
As used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface,
megabyte per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits
per second. Effective maximum SATA 6 Gb/s transfer rate calculated according to the Serial ATA specification
published by the SATA-IO organization as of the date of this document. Visit www.sata-io.org for details.
Physical Specifications
WD30PURX/WD30PURZ/
WD30EVRX
WD20PURX/WD20PURZ/
WD20EVRX
Capacity
1
3,000,592 MB 2,000,398 MB
Interface SATA 6 Gb/s SATA 6 Gb/s
Number of Disks
3 2
Data Surfaces
6 4
Number of Heads
6 4
Physical bytes per sector
4096 4096
Host bytes per sector
512 512
User Sectors per Drive
5,860,533,168 3,907,029,168
Servo Type Embedded Embedded
Recording Method LDPC Target LDPC Target
1
As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte
(GB) = one billion bytes, and one terabyte (TB) = one trillion bytes. Total accessible
capacity varies depending on operating environment. As used for buffer or cache,
one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface,
megabyte per second (MB/s) = one million bytes per second, and gigabit per
second (Gb/s) = one billion bits per second. Effective maximum SATA 3 Gb/s
transfer rate calculated according to the Serial ATA specification published by the
SATA-IO organization as of the date of this document. Visit www.sata-io.org for
details.