Western Digital Purple PR1000M, Technical Reference Manual

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P
RODUCT
F
EATURES PR1000M
18 RELEASED 5/8/17 (WD CONFIDENTIAL) 2679-800020-A03
utility will overwrite user data.
Download the latest versions of the Data Lifeguard Diagnostic and Data Lifeguard
Tools programs at
support.wdc.com.
3.15.2 Thermal Management
The drive is designed with Thermal Management features for high reliability.

State-of-the-art mechanical design —Mechanical design is optimized to reduce
the drive’s temperature. State-of-the-art thermal dissipation and windage design
is employed.

Closed loop servo management —Thermal management monitors the drive
temperature and can control servo operations to maintain a stable operating
temperature under high temperature conditions. This is a closed loop servo and
thermal control system.

S.M.A.R.T. HDA Temperature Attribute —The S.M.A.R.T. HDA Temperature
Attribute is supported. The S.M.A.R.T. temperature value is reported within ±3°C
of the base casting temperature.

Ducted airflow —Provides protection to the Read/Write element from heated air.
3.15.3 Internal Environmental Protection System
This dual filter system protects the inside environment of the drive from
contamination. System features include:

Dual Filtration System to ensure fast clean-up times

Directed airflow to maximize mechanical cooling

Increase casting surface area to maximize cooling

Ducted air flow to protect Read Rite elements from heated air

Breather filter located at low pressure area

Enhanced heat dissipation
3.15.4 Recoverable Errors
A sector marked for repair is written back to the same location. The sector is then
read several times to be sure that it was written correctly and that there is no media
damage at its location (sector test). If the sector does not easily and consistently read
correctly, the sector is then relocated with original data.
3.15.5 Unrecoverable Errors
If an unrecoverable error is found during the offline scan, the sector is marked. Future
reads from this location will continue to perform full error recovery. However, the
next write to this location will perform a sector test to be sure the media is not
damaged, and the sector relocated if the sector test fails.
3.15.6 Self Test
Self Test is a quick way to determine the operation status of a drive. The following
Self Tests are supported:

Quick Test : Completes in less than two minutes.

Extended Test : Tests all the critical subsystems of the drive.

Conveyance Test : Quickly identifies issues caused by handling damage.

Selective Test : Scans host-defined sections of the drive.