Fujitsu M2266S Technical Handbook page 14

Error Recovery
The IDD can try to recover from errors in the SCSI bus or 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
recovery processing by these error recovery functions of the IDD.
Automatic Alternate Block Reassignment
If a defective data block is detected during read or write, the IDD can
automatically reassign its alternate data block.
Programmable Data Block Length
Data can be accessed with a fixed block-length unit. Data block length is
programmable, and can be set during formatting to the most suitable length,
from 180 to 4,128 bytes, with a 2-byte boundary.
Defective Block Slipping
A logical data block can be reallocated in a physical sequence by slipping the
defective data block during formatting. This results in high speed
contiguous data-block processing without a revolution delay due to a
defective data block.
High-Speed Positioning
A rotary voice coil motor achieves fast positioning.
Large Capacity
The unformatted capacity is 1266 MB. Typically, at 512 bytes per sector the
formatted capacity is 1079 MB. A disk subsystem with large capacity can be
constructed that uses space efficiently.
Start/Stop of Spindle Motor
Using the SCSI command, the host system can start and stop the spindle
motor.
Diagnosis
The IDD has a diagnostic capability that checks internal controller functions
and drive operations to facilitate testing and repair.
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FS810125-01 . . . A Fujitsu America, Inc.
M2266S/H
Technical Handbook