Dell PowerEdge 4300 Dell PowerEdge 4300 Systems User's Guide - Page 63

aspicd.cdm, cdrom.nlm, max_tags - firmware

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2. Load aspicd.cdm by entering the following command line: load [pathname] nwaspi.cdm NOTE: If aspicd.cdm does not work, unload it and load it again. The first load initializes the host adapter; unloading and reloading allows the initialization to be completed. 3. Load cdrom.nlm as follows: load [pathname] cdrom.nlm 4. Enter the following line at the prompt, and then note the number and name of the CD that appears: cd device list 5. Enter the number and volume name of the CD at the command line: cd mount [number] [name] The CD-ROM drive is now ready to be accessed as a volume. The Adaptec 78xx SCSI bus-mastering firmware increases the SCSI performance of the Adaptec 78xx series host adapters under multitasking environments. The firmware uses a paging mechanism to handle up to 255 SCSI commands simultaneously. The sequencer can simultaneously manage up to 32 tagged, or 2 nontagged, SCSI commands for each SCSI device, up to a limit of 255 SCSI commands. The firmware can queue as many commands as the operating system is able to send to the host adapter. To set this feature, enter the following command: max_tags=n In general, a low number for the max_tags option gives better sequential performance. This value varies with the level of random disk accesses and drive characteristics. NOTE: A large value for max_tags can cause starvation problems with some drives. Any error that occurs while the driver is initializing prevents the driver from loading. If an error does occur, the driver causes the system to beep and display a numbered error message: xxx message The xxx indicates the error code, and message is a line describing the error. The error codes are divided into three categories: 000-099 - Non-host-adapter-specific 100-299 - Host-adapter-specific 300-999 - Reserved Installing and Configuring SCSI Drivers 3-25

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Installing and Configuring SCSI Drivers
3-25
2.
Load
aspicd.cdm
by entering the following command line:
load [
pathname
] nwaspi.cdm
NOTE: If
aspicd.cdm
does not work, unload it and load it again. The first load ini-
tializes the host adapter; unloading and reloading allows the initialization to be
completed.
3.
Load
cdrom.nlm
as follows:
load [
pathname
] cdrom.nlm
4.
Enter the following line at the prompt, and then note the number and name of
the CD that appears:
cd device list
5.
Enter the number and volume name of the CD at the command line:
cd mount [
number
] [
name
]
The CD-ROM drive is now ready to be accessed as a volume.
2SWLPL]LQJ±3HUIRUPDQFH±
The Adaptec 78
xx
SCSI bus-mastering firmware increases the SCSI performance of
the Adaptec 78
xx
series host adapters under multitasking environments. The firm-
ware uses a paging mechanism to handle up to 255 SCSI commands simultaneously.
The sequencer can simultaneously manage up to 32 tagged, or 2 nontagged, SCSI
commands for each SCSI device, up to a limit of 255 SCSI commands. The firmware
can queue as many commands as the operating system is able to send to the host
adapter. To set this feature, enter the following command:
max_tags=
n
In general, a low number for the
max_tags
option gives better sequential perfor-
mance. This value varies with the level of random disk accesses and drive
characteristics.
NOTE: A large value for
max_tags
can cause starvation problems with some drives.
7URXEOHVKRRWLQJ±IRU±,QWUDQHW:DUH±
Any error that occurs while the driver is initializing prevents the driver from loading. If
an error does occur, the driver causes the system to beep and display a numbered
error message:
xxx
message
The
xxx
indicates the error code, and
message
is a line describing the error. The error
codes are divided into three categories:
²
000-099 — Non–host-adapter-specific
²
100-299 — Host-adapter-specific
²
300-999 — Reserved