HIKVISION DS-A81 Series - Page 31

DS-A80&81 Series Storage System User Manual
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Figure 4. 8 Create Array
2. Input Array name in text field.
3. Select RAID level in dropdown list. Up to 8 kinds of RAID are provided, including RAID 0, RAID 1, RAID 3,
RAID 5, RAID 6, RAID 10, and RAID 50.
Figure 4. 9 Required Disk Quantity
RAID Level
Required Disk Quantity
RAID 0
At least 2 disks.
RAID 1
At least 2 disks.
RAID 3
At least 3 disks.
RAID 5
Valid range: [3, 12].
RAID 6
At least 4 disks.
RAID 10
RAID is made of RAID 0 and RAID 1 which requires
at least 4 even disks.
RAID 50
RAID is made of RAID 0 and RAID 5 which requires
at least 6 even disks.
4. Select Block size(KB) in dropdown list.
5. Select I/O priority as Performance priority, Protection priority, Balance, or Intelligent.
 Performance priority: To guarantee external IO task’s performance, internal IO task is totally stopped.
 Protection priority: To guarantee internal IO task’s performance, external IO task would only take the
rest channel.
 Balance: When both internal and external IO task exist, Balance ensures internal IO task occupy
certain channel without influencing external IO task.