Compaq Infortrend manual Cylinder/Head/Sector Mapping, Peripheral Device Type Settings

Table 9 - 2 Peripheral Device Type Settings:

Device Type	Setting
No Device Present	0x7f
Direct-access Device	0
Sequential-access Device	1
Processor Type	3
CD-ROM Device	5
Scanner Device	6
MO Device	7
Storage Array Controller Device	0xC
Unknown Device	0x1f

Cylinder/Head/Sector Mapping:

In the world of SCSI, drive capacity is decided by the number of blocks. For some of the operating systems (Sun Solaris...etc.) the OS will read the capacity based on the cylinder/head/sector count of the drive. For Sun Solaris, the cylinder cannot exceed 65535, so user can choose "cylinder<65535,” the controller will automatically adjust the head/sector count, then the OS can read the correct drive capacity. Please refer to “Advanced Features” in Appendix B and also to the related documents provided with your operating system. Cylinder, Head, Sector counts are selectable from the menu. To avoid the difficulties with Sun Solaris configuration, the values listed below can be applied.

Table 9 - 3 Cylinder/Head/Sector Mapping under Sun Solaris

Capacity	Cylinder	Head	Sector
< 64 GB	?	64	32
64 - 128 GB	?	64	64
128 – 256 GB	?	127	64
256 – 512 GB	?	127	127
512 GB - 1 TB	?	255	127

Older Solaris versions do not support drive capacity larger than 1 terabyte.

Advanced Configurations 9-16