Western Digital WDE2170, WDE4360 manual Advanced Features, Product Features

Description and Features WD Enterprise WDE2170/WDE4360

1.2.Advanced Features

Product Features

Formatted Capacities of 2.17 GB and 4.36 GB Low-profile 1-Inch (25.4 mm) in Height 7200 RPM Spindle Speed

SCSI-3 SPI Compliant; Ultra Fast/Ultra Fast Wide with SCA-2 interface supported 512 kilobytes Programmable Multi-segmented Data Buffer (1 MB option)

Zoned Recording

Headerless Format

SCAM Plug-N-Play Compliant

Single-ended or Differential SCSI Drivers/Receivers (optional)

Active Termination (available on 50- and 68-pin single-ended drives)

Downloadable Firmware (both interface and servo code)

Embedded Servo

Balanced Spindle

Dynamic Spindle Brake

Vertical or Horizontal Mounting

Performance Features

Media Data Transfer Rate up to 140 Mbits/s

Average Read Seek Time of 8 ms

4.17ms Rotational Latency Command Queuing

Command Reordering (Seek and Rotational) Write/Read Coalescing

Adaptive Caching Algorithm Self-Optimizing Buffer Ratios Adaptive Segmented Cache

Auto-Read Reallocation/Auto-Write Reallocation (ARRE/AWRE) Adaptive Servo Functions

Reliability Features

Self Monitoring and Reporting Technology (S.M.A.R.T.)

Direct Hot-Plug Capability in SCA-2 Configuration

Hardware ECC On-The-Fly Error Correction

CRC Data Buffer Protection

Sector Slipping Defect Management

￿￿Self Diagnostics on Power Up 1,000,000 Hour MTBF Projected

These advanced product features are further defined in section 3. In certain cases we refer you to other documents for additional detail. To obtain a document, contact your local Western Digital sales office, authorized Western Digital reseller, or access the Western Digital web page at www.wdc.com

2 RELEASED 04-08-97 4079-001045 Rev. B