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SCSI Description
5-68 Maxtor Atlas 10K III
Maxtor-Unique Page-Field Descriptions (Page 39h)
PS 1
Parameters Savable. This bit is only used with the MODE SENSE command.
A returned value of 1 indicates that the disk drive is capable of saving the
page in a non-volatile, vendor-specific location. The bit is RESERVED with
a MODE SELECT command.
Wait SpinUp
Enable
0
When this field = 0, the disk drive spins up upon power on. When this field
= 1, the disk drive performs a Wait/Spin.
Enable Error
Logging
0
When this field = 0, Error Logging is disabled.
When this field = 1, Error Logging is enabled.
Disable
Parity Check
0
When this field = 0, Parity Checking is enabled.
When this field = 1, Parity Checking is disabled.
Realloca-
tion Uncor-
rected
Errors
0
When this field = 0, reallocation of blocks that have uncorrectable read er-
rors does not take place
When this field = 1, a block that encounters an uncorrectable read error will
be marked for pending reallocation. The block in error remains “as is” for a
possible recovery on a future access. If a subsequent successful read or
write (with readback / compare) occur, the pending reallocation will be de-
ferred. However, it will be “remembered” that an unrecoverable read oc-
curred at one time, and if a second unrecoverable read occurs, the block will
be reallocated on the next successful access. Also, if a subsequent unsuc-
cessful write occurs on a block marked for pending reallocation, the block
will be reallocated.
Enable Fill
Data Pattern
1
When this field = 0, the disk drive ignores any information in Byte 2 of the
FORMAT UNIT command. Note that if the setting in Byte 2 of FORMAT
UNIT is “0”, the disk drive will interpret that setting as “1.”
When this field = 1, the disk drive writes the data pattern that is specified
in Byte 2 of the FORMAT UNIT command into every user-accessible block
when the disk drive executes a FORMAT UNIT command.
Disable
SCAM
1
(Parallel)
When this field = 0, SCAM is enabled. When this field = 1, SCAM features
are disabled.
Disable Unit
Att’n
0
When this field = 0, a UNIT ATTENTION condition exists following power
on or a reset caused by either a BUS DEVICE RESET message or a hard reset
condition.
When this field = 1, the disk drive will not issue a CHECK CONDITION sta-
tus with the UNIT ATTENTION sense key on the first command following a
reset. The disk drive will execute the first command issued after a reset con-
dition.
SSSIE 0
Software Selectable SCSI ID Enable. When this field = 0, the disk drive’s
SCSI ID is determined via the disk drive’s hardware ID select jumper set-
tings.
When this field = 1, the disk drive’s SCSI ID setting is determined by the
value set in the Software Selectable SCSI ID field (Byte 3, bits 0 – 3).
Disable
Auto WRITE
0
When this field = 0, the Auto WRITE function is enabled.
When this field = 1, the Auto WRITE function is disabled.
Disable
Auto READ
0
When this field = 0, the Auto WRITE function is enabled.
When this field = 1, the Auto WRITE function is disabled.
Use Three
Bits for
Delay
0
When this field = 0, Delay Spin is not enabled.
When this field = 1, and Staggered Spin Delay (Bytes 6 & 7) is enabled, the
three lower bits of the disk drive’s SCSI ID are used for the multiplier to de-
termine the length of the delay. When only three bits are used, disk drives
0 through 7 and drives 8 through 15 have the same corresponding delays
since the fourth bit is not used (disk drive 0 has the same delay as disk drive
8, disk drive 1 has the same delay as disk drive 9, and so on).