Installation guide

The page-control-field argument specifies the type of mode pages to
obtain from the device. The page control fields that you can specify are as
follows:
• changeable
• current
• default
• saved
The following example changes the error recovery parameters:
scu> change pages error
Changing Error Recovery Parameters (Page 1 - current values):
Disable Correction (DCR) [R:0-1 D:0]:
Disable Transfer on Error (DTE) [R:0-1 D:0]:
Post Recoverable Error (PER) [R:0-1 D:0]:
Transfer Block (TB) [R:0-1 D:0]:
Automatic Write Allocation (AWRE) [R:0-1 D:1]:
Read Retry Count [R:0-255 D:8]: 25
Write Retry Count [R:0-255 D:2]: 5
scu>
download filename [save][{id buffer-id| offset offset-value| segment [ size]}]
You can use the preceding command with any device that supports the
downloading of operating software through the Write Buffer command.
The save keyword directs the device to save the new operating software in
nonvolatile memory if the download command is completed successfully.
With save specified, the downloaded code remains in effect after each
power cycle and reset. If the save keyword is not specified, the downloaded
software is placed in the control memory of the device. After a power cycle
or reset, the device operation would revert to a vendor-specific condition.
If the save parameter is omitted, a Download microcode (mode 4)
command is issued. Specifying save performs a Download microcode and
save operation (mode 5). Not all devices accept both modes.
You can specify various parameters to control the download operation. Most
devices do not require these optional parameters, but since each vendor
may implement the download command differently, these parameters
provide the capability to override program defaults.
The following notes apply to the download parameters:
• The default buffer ID is 0.
• The default offset value is 0.
• The default segment size is 8 KB. If this parameter is not specified, the
default is to download the entire image at once.
SCSI/CAM Utility Program B–11