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Chapter 6 RAID Group Management
6.1 RAID Group Status
ETERNUS Web GUI User’s Guide
Copyright 2013 FUJITSU LIMITED P2X0-1090-10ENZ0
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• RAID Type
The type of RAID group is displayed.
- High Performance (RAID1+0)
- High Capacity (RAID5)
- High Reliability (RAID6)
- Reliability (RAID5+0)
- Mirroring (RAID1)
- Striping (RAID0)
• Total Capacity
The total capacity of the RAID groups is displayed.
• DCMF
The Drive Command Multiplying Factor (DCMF) is displayed.
If the DCMF is changed, the number of commands issued to the drive is increased in multiples of the DCMF
set value (if DCMF is "2", it is double).
• Rebuild Priority
The rebuild priority of the RAID group is displayed.
When the Rebuild Priority is "Low", give priority to host access.
When the Rebuild Priority is "Middle", give the same priority as the host access to rebuild, copyback, and
redundant copy.
When the Rebuild Priority is "High", give priority to rebuild, copyback, and redundant copy.
• Throttle
The throttle value is displayed.
Throttle is the proportion of the number of commands that are issued to a drive at the same time to the
maximum number of commands that can be issued. When the throttle value is "100%", the maximum
number of commands specified for each drive (the default number of commands) are issued.
When "Disk Tuning Parameter Setting" of the [Modify RAID Group Parameters] function is
disabled, a "-" (hyphen) is displayed.
When logged in with a user account that has a default "Monitor" role, this item is not displayed.
• Ordered Cut
Ordered Cut is displayed between 0 and 65535.
Ordered Cut is the number of commands for optimizing drive access processing (priority control). When
Ordered Cut is "x", the command to perform the priority control is issued for every x commands issued, and
priority control is performed for the command issued before this command.
When Ordered Cut is "0", the interval for priority control (priority control at every "x" commands") cannot be
specified. All of the commands issued to the drive are processed according to their priority settings.
When "Disk Tuning Parameter Setting" of the [Modify RAID Group Parameters] function is disabled, or the
configuration drive of the RAID group is SSD, a "-" (hyphen) is displayed.
When logged in with a user account that has a default "Monitor" role, this item is not displayed.
RAID groups in which LDE is being performed are not displayed in the list.