Reliability Specification And Characteristics; Device Plug Connector Pin Definitions; Figure 2-4 Standard Factory Connectors; Table 2-2 Device Pin Connector Pin Definitions - Western Digital Purple PR1200M Technical Reference Manual

WD Purple™ PR1200M
2.6

Reliability Specification and Characteristics

The average Annualized Failure Rate (AFR) calculations assume operation at nominal
voltages, a base casting temperature of 40°C, and the workload usage of a typical
surveillance environment.Workload is defined as the number of bytes transferred by
the user to/from the drive. If the system(s) that the drive is installed in are not
capable of meeting the characteristics listed, please use a WD drive that matches
your system(s)' capability. Operating drives outside any of the reliability
characteristics listed will result in a higher AFR
Average AFR over the Limited Warranty Period
Base Casting Temperature
Annual Power on Hours (POH)
Annualized Workload Rate
1
Annualized Workload Rate = TB transferred x (8760 / recorded power-on hours)
2.7

Device Plug Connector Pin Definitions

These drives interface with the host I/O bus via the SATA interface connection
illustrated in Figure 2-4 below. The drive receives power from the SATA power
connection or legacy ATA 4-pin power connector J3 in Figure 2-4. Table 2-2 identifies
the pin definitions of the SATA connectors and the corresponding signal names and
signal functions.
Figure 2-4. Standard Factory Connectors
Table 2-2. Device Pin Connector Pin Definitions
2679-800065-A03
Reliability Specification
Reliability Characteristics
1
S1 Gnd 2nd mate
S2 A+ Differential signal pair A from Phy
S3 A-
S4 Gnd 2nd mate
S5 B- Differential signal pair B from Phy
S6 B+
S7 Gnd 2nd mate
Key and spacing separate signal and power segments
RELEASED 5/4/17 (WD CONFIDENTIAL)
Specifications
0.88%
40°C
<=8760
<=180TB
11