Advanced Features - Western Digital WDE4360 Technical Reference Manual

Description and Features
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


4.17 ms 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
WD Enterprise WDE2170/WDE4360
4079-001045 Rev. B