Table 5-184 Extent Descriptors-Data Format; Table 5-185 Reservation Types - Maxtor ATLAS 10K IV User Manual

SCSI Description
Bit
Byte
0
(MSB)
1 - 3
(MSB)
4 - 7
The Reservation Type field defines the type of reservation in effect for the extent
being reserved. Available types of reservations are shown in Table 5-185.
Reservation Type
00b
01b
10b
11b
RelAdr is always 0: The Maxtor Atlas 10K IV hard disk drive does not support
relative addressing.
If both the LongID and the Extent bits = 1, then the parameter list takes the format
shown in Table 5-186.
Table 5-186
Bit
7
Byte
(MSB)
0 - 7
(MSB)
8 - n
If the LongID bit = 1 and the Extent bit = 0, then the parameter list length is eight and
the parameter list has the format shown in Table 5-187.
Table 5-187
Bit
Byte
(MSB)
0 - 7
5-126 Maxtor Atlas 10K IV
Extent Descriptors-Data Format
Table 5-184
7 6 5
Reserved
Reservation Types
Table 5-185
READ shared. No write operations are permitted by any initiator to the re-
served extent. Any initiator may read from the extent.
WRITE exclusive. No other initiator may write to the indicated extent.
Any initiator may read from the extent.
READ exclusive. While this reservation is active, no other initiator may be
permitted to read to the indicated extent.
Exclusive access. While this reservation is active, no other initiator is per-
mitted any access to the reserved extent.
Parameter List When LongID and Extent Bits = 1-Data Format
6 5
RESERVE (10) ID Only Parameter List-Data Format
7 6 5
4 3
RelAdr
Number of Blocks
Logical Block Address
Description
4 3 2
Third Party Device ID
Extent Descriptors
(See Figure 5-91 Above)(LSB)
4 3
Third Party Device ID
2 1 0
Reservation Type
(LSB)
(LSB)
1 0
(LSB)
2 1 0
(LSB)