Specifications; Performance Specifications; Table 2-1 Physical Specifications; Table 2-2 Performance Specifications - Western Digital Re EX800M Technical Reference Manual

Specifications

2.0 S
PECIFICATIONS
Table 2-1. Physical Specifications
Physical Specifications
Capacity
Interface
Disk count platform
Number of Heads
Bytes per sector
User Sectors per Drive
Servo Type
Channel 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 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
Optional SED model.
2.1

Performance Specifications

Table 2-2. Performance Specifications
Average Seek (without overhead)
- Read
- Write
Average Latency
Rotational Speed
Data Transfer Rate (maximum at OD)
- Maximum burst interface transfer rate
- Maximum sustained interface transfer rate
Buffer Size
Error Rate - Unrecoverable
Spindle Start Time
- From Power-on to Drive Ready
Spindle Stop Time
Load/Unload Cycles
1
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
Defined as the time from power-on to the setting of Drive Ready and Seek Complete including calibration.
3
Controlled unload at ambient condition.
4
1 WD4000FYYZ
WD4000FDYZ
4 TB
SATA 6 Gb/s
5-disk
10
512
7,814,037,168
Embedded
1
2
3
RELEASED 8/13/13
WD3000FYYZ
2 2
WD3000FDYZ
3 TB
SATA 6 Gb/s
5-disk
8
512
5,860,533,168
Embedded
LDPC–Low Density Parity Code
7.7 ms average
8.3 ms average
4.2 ms (nominal)
7200 RPM (nominal)
6 Gb/s
WD4000FxYZ: 171 MB/s
WD3000FxYZ: 168 MB/s
WD2000FxYZ: 164 MB/s
64 MB
16
<10 in 10 bits read
15s average (FAST spinup mode)
20s average (STANDARD spinup mode)
<15s average
600,000 minimum
EX800M
WD2000FYYZ
2
WD2000FDYZ
2 TB
SATA 6 Gb/s
3-disk
6
512
3,907,029,168
Embedded
2679-771339-A05