Mode Page 00 (Vendor Unique Parameters) - Hitachi ULTRASTAR 15K450 HUS154530VLF400 Specifications

19.10.2 Mode Page 00 (Vendor Unique Parameters)

Table 147: Vendor Unique Parameters - Page 00
Byte
7
0 PS
1
2
3 Ignored
4
5
6 IGRA
7
8
9
10
11
12
13
14 DRRT
15 Ignored
Fields marked in the table as 'Ignored' are not used or checked by the drive. They will be initialized to zero but can be set as
desired for compatibility with older drives.
• MRG (Merge Glist into Plist) bit is set to 1 for merging the Glist entries into the Plist during FORMAT UNIT command.
• VGMDE (Veggie Mode) bit set to 1 will cause the drive to execute random self-seeks. To enable this mode, the initiator
must perform the mode select to set the bit while the drive is spinning, then Stop Unit, then Start Unit. VGMDE set
to 0 disables the self-seeks (normal operation).
• RRNDE (Report Recovered Non Data Errors) bit controls the reporting of recovered Non Data Errors when the PER bit
is set. If RRNDE is set, recovered Non Data Errors are reported. If the RRNDE bit is not set, then recovered Non
Data Errors are not reported.
• FDD (Format Degraded Disable) controls the reporting of Format Degraded sense data for Test Unit Ready commands
when the drive is in a format degraded state. When the FDD bit is one, Format Degraded sense data will not be
reported for a Test Unit Ready command. When the FDD bit is zero, Format Degraded sense data will be reported
for Test Unit Ready commands when the drive is in a format degraded state. This bit does not affect the reporting of
Format Degraded conditions for any media access commands.
• CAEN (Command Aging Enable) When set this bit causes the Command Age Limit timer to be used to avoid commands
waiting in the command queue for an indefinite period. When commands have been in the queue for a period of time
greater than the timer limit they will be reordered to be executed on a first come first served basis. When this bit is
reset, commands are always executed based on the queue reordering rules.
6 5
0
Page Length = 0Eh
Ignored
VGMDE
Ignored
AVERP Ignored
Overall Command Timer (low byte)
Temperature Threshold
Command Aging Limit (Hi byte)
Command Aging Limit (Low byte)
Read Reporting Threshold
Write Reporting Threshold
Ignored
FCERT BYPS
Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
Bit
4 3 2
Page Code = 00h
MRG
Ignored
Ignored
FDD Ignored
OCT (high nibble)
Ignored
FFMT
HIM Ignored
172
Default
1 0
80h
0Eh
Ignored
RRNDE Ignored
00h
CAEN Ignored
00h
00h
00h
00h
00h
30h
0Ah
0Ah
Ignored 00h
Reserved = 0 00h
00h
00h
02h