Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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Logical Block Reference Tag field.
•GRD_CHK (Guard Check) is set to one to indicate that the drive checks the Logical Block Guard Tag field in the pro-
tection information, if any.
•APP_CHK (Application Tag Check) bit is set to one to indicate that the drive checks the Logical Block Application
Tag field in the protection information, if any.
•REF_CHK (Reference Tag Check) bit is set to one to indicate that the drive checks the Logical Block Reference Tag
field in the protection information, if any.
•GROUP_SUP (Group Supported) bit is set to zero to indicate that the grouping function is not supported.
•PRIOR_SUP (Priority Supported) bit is set to zero to indicate that task priority is not supported.
•HEADSUP (Head of Queue Supported), ORDSUP (Ordered Supported), and SIMPSUP (Simple Supported) are set to
one to indicate support for Head of Queue, Ordered and Simple task attributes.
•NV_SUP (Non-volatile Supported) is set to 0 to indicated that non-volatile cache features are not supported.
•V_SUP (Volatile Supported) is set to 1 to indicated support of a volatile cache.
19.5.1.7 Inquiry Data Format - EVPD = 1, Page Code - 87h
•Policy Page Code set to 3Fh and Policy Subpage Code set to FFh indicate that the descriptor applies to all mode pages
and subpages
•MILUS (Multiple Logical Units Share) set to one indicates the policy is shared by multiple logical units.
•Mode Page Policy set to 00b indicates that all mode pages and subpages are shared.
19.5.1.8 Inquiry Data Format - EVPD = 1, Page Code - 88h
Byte BIT
76543 2 1 0
0 Qualifier = 0 Peripheral Device Type = 0
1 Page Code = 87h
2-3 Page Length = 0004h
4 Reserved=0 Policy Page Code = 3Fh
5 Policy Subpage Code = FFh
6 MILUS=1 Reserved = 0 Mode PagePolicy = 0
7 Reserved = 0
Byte BIT
76543 2 1 0
0 Qualifier = 0 Peripheral Device Type = 0
1 Page Code = 88h
2-3 Page Length = 48 (0030h)
4-5 Reserved=0
6-7 Primary Relative Port = 0001h