Specifications; Performance Specifications; Physical Specifications - Western Digital Purple PR1000M Technical Reference Manual

S
PECIFICATIONS
2.0 S
PECIFICATIONS
2.1

Performance Specifications

Rotational Speed
Data Transfer Rate
- Buffer to Host
- Host to/from Disk
Buffer Size
Error Rate - Unrecoverable
Spindle Start Time
- From Power-on to Drive Ready
- From Power-on to Rotational Speed
Spindle Stop Time
Load/Unload Cycles (controlled unload at ambient
condition)
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.
2.2

Physical Specifications

Specifications represented are of a typical production drive and may be subject to
change or variation without notice
Physical Specifications
Capacity
Interface
Number of Disks
Data Surfaces
Number of Heads
Physical bytes per sector
Host bytes per sector
User Sectors per Drive
Servo Type
Recording Method
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.
4
1
1
RELEASED 5/8/17 (WD CONFIDENTIAL)
5400 RPM Class
6 Gb/s maximum
145 MB/s sustained (typical)
64 MB
14
<1 in 10 bits read
14.5s average
9s average
<15s average
300,000
.
WD30PURX/WD30PURZ/
WD30EVRX
3,000,592 MB
SATA 6 Gb/s
3
6
6
4096
512
5,860,533,168
Embedded
LDPC Target
PR1000M
WD20PURX/WD20PURZ/
WD20EVRX
2,000,398 MB
SATA 6 Gb/s
2
4
4
4096
512
3,907,029,168
Embedded
LDPC Target
2679-800020-A03