Physical Specifications - Western Digital caviar blue xl500s Technical Reference Manual

XL500S
2.2

Physical Specifications

Physical Specifications
Capacity
Interface
Number of Disks
Data Surfaces
Number of Heads
Bytes per Sector
User Sectors per Drive
Servo Type
Recording Method EPR4
ECC
Head Park
PRML - Partial Response Maximum Likelihood
1
Specifications represented are of a typical production drive and may be subject to change or variation without
notice.
2
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 specification sheet. Visit www.sata-io.org for details.
3
Turning off the system power causes the drive to perform an automatic head park operation.
2679-701211-A06
1,2
2
RELEASED 10/21/10 (WD CONFIDENTIAL)
WD5000AAKX WD3200AAKX
WD5000AAKS
500,107 MB
320,072
SATA 6 Gb/s (AAKX)
SATA 6 Gb/s
SATA 3 Gb/s (AAKS)
1
2
2
512
976,773,168 625,142,448
Embedded Embedded
Rate 16/17 PRML Rate 16/17 PRML
Reed-Solomon Reed-Solomon
Automatic
Specifications
WD2500AAKX
MB 250,059 MB
SATA 6 Gb/s
1 1
2 1
2 1
512 512
488,397,168
Embedded
Rate 16/17 PRML
Reed-Solomon
Automatic Automatic
5