HIKVISION DS-81 Series - Page 28

Storage System User Manual
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Figure 4. 8 Create Array
2. Input Array Name in text field.
3. Select Array Type in drop-down list. RAID 0, RAID 1, RAID 3, RAID 5, RAID 6, RAID 10, and RAID 50 are
selectable.
Figure 4. 9 Required HDD Quantity
Array Type
Required HDD Quantity
RAID 0
At least 2 HDDs.
RAID 1
At least 2 HDDs.
RAID 3
At least 3 HDDs.
RAID 5
Valid range: [3, 12].
RAID 6
At least 4 HDDs.
RAID 10
RAID is made of RAID 0 and RAID 1 which requires
at least 4 even HDDs.
RAID 50
RAID is made of RAID 0 and RAID 5 which requires
at least 6 even HDDs.
4. Select Array Block Size(KB) in drop-down list.
5. Select I/O Priority as Performance Priority, Protection Priority, Balanced, or Smart.
 Performance Priority: To guarantee external IO task performance, internal IO task is totally stopped.
 Protection Priority: To guarantee internal IO task performance, external IO task would only take the
rest channel.
 Balanced: When both internal and external IO task exist, Balance ensures internal IO task occupy
certain channel without influencing external IO task.
 Smart: Without external IO task, array is initialized in the highest speed. Or array is initialized in the
lowest speed.
If RAID level is RAID 0, I/O priority is unavailable.