Xerox SAFEStor User Manual page 56

SAFEStor User Guide
To change a Volume set attribute, scroll to the attribute and press Enter. Make the
modification and then press ESC to save the change. The following attributes can be
modified:
Volume Name
RAID Level
Capacity
Stripe Size
SCSI Channel
SCSI ID
SCSI LUN
Cache Mode
Tag Queuing
The default volume name will always appear as Volume
Set. #. You can rename the volume set providing it does
not exceed the 15-character limit.
To set the RAID level for a Volume Set, highlight Raid
Level and press Enter. The available RAID levels for the
current Volume Set are displayed. Select the required RAID
level and press Enter to confirm.
The maximum size of the volume is always the
default setting. You can increase or decrease the
capacity using the UP and DOWN arrow keys.
Each volume set can have a capacity which is less
than, or equal to, the total capacity of the raid set
on which it resides.
This parameter sets the size of the segment
written to each disk in a RAID 0, 1, 0+1, 5 or 6
logical drives. You can set the stripe size to 4 KB,
8 KB, 16 KB, 32 KB, 64 KB, or 128 KB.
Select the SCSI channel number and press Enter to confirm.
Each SCSI device attached to the SCSI card, as well as the
HBA card itself, must be assigned a unique SCSI ID number.
An LVD SCSI channel can connect up to 15 devices. The
Volume Set appears as a large SCSI device. You must
assign an ID from a list of SCSI IDs. ID 7 is normally
reserved for the HBA.
Each SCSI ID can support up to 8 LUN's. Most SCSI host
adapters treat each LUN like a SCSI disk.
You can set the cache mode to: Write-Through
Cache or Write-Back Cache.
Enabling Tag-Queuing is useful for enhancing overall system
performance for multi-tasking operating systems. The
Command Tag (Drive Channel) function controls the SCSI
command tag queuing support for each drive channel. This
function should remain enabled and should only be
disabled when using older SCSI host cards that do
not support command tag queuing.
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