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CAUTION
This option can destroy all data on the hard disk.
StorCon copies Intel RAID Controller SRCU31 specific configuration blocks on the hard disk
drive, a primary block, and a mirrored secondary block. The possible settings are different if you
select a SCSI hard disk drive or a Fibre Channel hard disk drive. With a FCAL hard disk drive
there are only a few settings which are relevant. You should always check that they are all
"Enabled" or "On." If the hard disk drive you have selected is an Ultra1 60 device and the Intel
RAID Controller SRCU31 has Ultra160 SCSI channels, <F4> "Advanced Configuration," allows
you to configure the so-called "Domain Validation" (a cyclical check of the correct data transfer at
a given rate). Normally this parameter is OFF.
The SCSI bus can operate two methods of data transfer: asynchronous and synchronous. Each
SCSI device must be able to perform the asynchronous transfer; the synchronous is optional. The
advantage of the synchronous transfer is a higher data transfer rate, since the signal transfer times
on the possibly long SCSI cable have no influence on the transfer rate. This mode is only effective
if both devices support synchronous transfer and can communicate with each other in this mode.
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 drive 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 43 ) may require different
evaluations, depending on the device's current state and the options you selected.
Figure 43. 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.
Storage Console
107
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