System information

Using the RAID GUI
2-15
2.5 Quick Setup
2.5.1 Performance profile
The RAID GUI provides three performance profiles for you to apply the preset settings to the RAID configuration. This
allows users to achieve the optimal performance for a specified application. When using a profile for the RAID
configuration, any attempt to change the settings is rejected. See the following table for the values of each profile. Select
Off if you want to configure the settings manually.
2.5.2 RAID setup
To perform quick setup, all hard disks must be on-line and unused. Users can specify the RAID level, number of spare
disks, and initiation method for an easy RAID configuration. See the following for details of each option.
• Single-controller RAID configuration
A volume (for raid30, raid50, or raid60) or a logical disk (for other RAID levels) will be created with all capacity of all disks
in the RAID enclosure. It will be mapped to LUN 0 of all host ports. All other configurations will remain unchanged, and all
RAID parameters will use the default values.
Profile AV streaming
Maximum IO per sec-
ond
Maximum throughput
Disk IO Retry Count
0
(Degrade: 2)
1 1
Disk IO Timeout (second)
3
(Degrade: 10)
30 30
Bad Block Retry Off On On
Bad Block Alert On N/A N/A
Disk Cache On On On
Write Cache On On On
Write Cache Periodic
Flush (second)
5 5 5
Write Cache Flush Ratio
(%)
45 45 45
Read Ahead Policy Adaptive Off Adaptive
Read Ahead Multiplier 8 - 16
Read Logs 32 - 32
Table 2-9 Performance profile values
Note
When the disks are in the degraded mode with the AV streaming profile selected, the disk IO retry
count and timeout values may be changed to reduce unnecessary waiting for I/O completion.
HDD Information This shows the number and the minimum size of hard disks.
RAID Level RAID 0 / RAID 3 / RAID 5 / RAID 6 / RAID 10 / RAID 30 / RAID 50 / RAID 60
Spare Disks Select the required number of global spare disks.
Initialization Option Background: The controller starts a background task to initialize the logical disk by
synchronizing the data stored on the member disks of the logical disk. This option
is only available for logical disks with parity-based and mirroring-based RAID
levels. The logical disk can be accessed immediately after it is created.
Noinit: No initialization process, and the logical disk can be accessed immediately
after it is created. There is no fault-tolerance capability even for parity-based RAID
levels.