Intel SRCMR, User Manual

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106 Intel RAID Controller SRCMR User’s Guide
Sync. Transfer Rate:
This is the synchronous data transfer rate in MB/s. Ultra160 SCSI allows up to 160 MB/s.
If a SCSI cable does not permit a certain transfer rate, the transfer rate can be reduced to a value
that permits trouble-free data transfer. Lowering the transfer rate may also become necessary when
using a configuration which does not allow full speed.
Disconnect: Enabled:
You can connect several components to a SCSI bus. It is particularly important to guarantee a high
degree of overlapping action on the SCSI bus. This high degree of overlapping becomes possible
when a SCSI device has Disconnect enabled.
Disk Read Cache / Disk Write Cache / Tagged Queues:
For performance reasons, the read ahead and write cache of the hard disk should be always on.
Tagged Queues is a SCSI feature which allows the drive to execute more than one command at a
time. If available, it should also be On.
If you leave this configuration form with <Esc> and you have made changes, StorCon displays a
security request. The warning of the destruction of all data (Figure 45
) may require different
evaluations, depending on the device’s current state and the options you selected.
Figure 45. Disk Initialization Confirmation
If this operation is the first initialization of the device, for example, the drive was previously
connected to a different controller, all data will be lost. If the device has already been initialized,
and only internal parameters such as Disconnect, Synchronous Transfer, and Disk Read/Write
caches, or Tagged Queues have been changed, the data on the drive remains intact. Only the
functional state of the device changes.
Check Surface
WARNING
This option destroys all data on the hard disk.
This option checks of the surfaces of the hard disk media. The Intel RAID Controller SRCMR
writes and reads certain data patterns and checks them for correctness.
After confirming the security request, a progress information is displayed. You can interrupt the
Check Surface option by pressing <Esc>.