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Writer: Robert Young Project: HSZ70 Solutions Software V7.7 for Novell NetWare - PCI Comments:
Part Number: AA-R8JUE-TE File Name: -appb Adaptec Driver Information.doc Last Saved On: 5/17/00 9:17 AM
Appendix
B
Adaptec Driver Information
This appendix describes the Adaptec Driver options and that you need to know
to properly configure the Adaptec Driver for NetWare.
Adaptec Driver
To take full advantage of the features of the RAID Array 7000, the Adaptec
driver AIC7870.DSK must be loaded with the following switches:
Load aic7870.dsk lun_enable=ff multlun_targets=ff
io_timeout=30 io_retries=10
The dual controller failover capability must have the io-timeout and the
io_retries values set. This value depends on the number and size of storagesets
configured. If you are using a single controller RAID Array 7000, you do not
need these two switches.These values will vary according to the amount and
size of Newware volumes you have. The range for io_timeouts is 15 to 200
and the range for io_retries is 0 - 100.
The io_timeout variable is a counter that is used to detect and retry/abort I/O
requests that have either come back with an error or haven’t come back at all
(i.e. lost or not completed for some reason). Approximately every two
seconds, the driver calls a timer routine that decrements the io_timeout counter
of all I/O requests. When it reaches 0, the I/O request is either retried or
aborted (depending on the io_retries variable). Therefore, io_timeout * 2 is
approximately the number of seconds the driver waits before retrying or
aborting a given I/O command. Its primary purpose is to prevent the system
from hanging while waiting for lost I/O requests.
Содержание StorageWorks HSZ70
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Страница 119: ...Installing Upgrades to Your RA7000 Subsystem 8 33 Figure 8 20 Expansion enclosure SCSI bus addresses...
Страница 136: ...8 50 HSZ70 Solutions Software V7 7 for Novell NetWare PCI CXO5929A Figure 8 32 N 1 power cabling...
Страница 137: ...Installing Upgrades to Your RA7000 Subsystem 8 51 CXO5797A Figure 8 33 Fully redundant power cabling...
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