Multitech MultiVOIP MVPGK1 Gatekeepers, Hardware User'S Manual

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MultiVOIP Gatekeeper User Guide
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Appendix C - SBC Configuration Details
Drives: Primary Master/Slave & Secondary Master/Slave
In general, the SBC can handle four disk drives: a primary master, a primary slave, a secondary
master, and a secondary slave. The hard drive shipped with the Gatekeeper is a “Primary Master” drive
designated as Drive C. An IDE CDROM is supplied and functions as a Primary Slave drive and is
designated as Drive D. The “type” and “mode” settings for the primary master and the primary slave
drives should, in most cases, be AUTO.
When this field of the Standard CMOS Setup screen is set to AUTO, the SBC will automatically detect
the hard drive(s) in the system. The SBC can auto-detect 45 specific drive types (designated 1-45 in
this field).
The drive type can also be entered manually. If entered manually, the drive in use must match the type
entered in this field. If the drive being used is not of the type specified in this field, it will not work
properly in the Gatekeeper. For drives not on the list of 45 types, a user-defined drive can also be
specified in this field (as type “User”). When “User” is selected for this field, the operator needs to
specify the parameters of the hard drive (number of cylinders, heads, etc.). This information should be
provided in the documentation for the hard drive unit (this information is often specified on the exterior
of the hard drive unit, as well).
Note: If your SBC has trouble detecting your hard drive when the Type field in the Standard CMOS Setup screen is set
to AUTO, then you should enable the IDE HDD Auto Detection function in the CMOS Setup Utility screen. If the hard
drive is still not detected, designate the Type as User and enter the hard-drive values into the Standard CMOS Setup
screen
If the controller of the hard-disk drive interface is ESDI, the selection shall be “Type 1”.
If the controller of the hard-disk drive interface is SCSI, the selection shall be “None”
If the controller of the hard-disk drive interface is CD-ROM, the selection shall be “None”
Type:
Describes the hard drive. Default value is AUTO. Other values: 1-45, user, and none.
CYLS.:
Denotes the number of cylinders in the specified drive type.
HEADS:
Denotes the number of heads in the specified drive type.
PRECOM:
Precom is the read delay circuitry which takes into account the timing differences between the inner
and outer edges of the surface of the disk platter. This number designates the starting cylinder of the
signal.
LZONE:
Lzone is the landing zone of the heads. This number determines the cylinder location where the heads
will normally park when the system is shut down.
SECTORS:
Denotes the number of sectors in the specified drive type.
Size (Capacity):
Denotes the formatted capacity of the drive based on the following formula: (# of heads) X (# of
cylinders) X (# of sectors) X ( 512bytes/sectors)
Drive A and Drive B:
The options are 360 KB 5.25in, 1.2 KB 5.25in, 720 KB 3.5in, 1.44 MB 3.5in, 2.88 MB 3.5in and None. Not
Installed could be used as an option for workstations without disk drives.