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1.1 Standard Features
C141-E230 1-3
When Write Cache is enabled, you should ensure that the cached data is
surely flushed to the disk media before you turn off the drive's power.
To ensure it, you should issue either the SYNCHRONIZE CACHE
command or the STOP UNIT command with specifying “0” to the
Immediate bit, and then confirm that the command is surely terminated
with the GOOD STATUS.
(9) Command queuing feature
The HDDs can queue maximum 128 commands, and optimizes the issuing order of queued
commands by the reordering function. This feature realizes the high speed processing.
(10) Reserve and release functions
The HDDs can be accessed exclusively in the multi-host or multi-initiator environment by using the
reserve and release functions.
(11) Error recovery
The HDDs can try to recover from errors in the disk drive using its powerful retry processing. If a
recoverable data check occurs, error-free data can be transferred to the initiator after being corrected
in the data buffer. The initiator software is released from the complicated error recover processing
by these error recovery functions of the HDDs.
(12) Automatic alternate block reassignment
If a defective data block is detected during read or write the HDDs can automatically reassign its
alternate data block.
(13) Programmable data block length
Data can be accessed in fixed-block length units. The data block length is programmable, and can be
specified at initializing with a multiple of four within the range of 512 to 528 bytes.
Error rate increase
1. The drive format at factory shipment is generally 512 bytes.
2. The recoverable Error of the drive might increase when the format would
be modified from 512 bytes to the following values:
516 bytes, 520 bytes, 524 bytes, 528 bytes.
3. The recoverable Error referred here is sense data (1-13-xx).