HIKVISION DS-A81 Series Quick Operation Manual page 42

Quick Operation Guide of DS-A81 Series Storage System
I/O), and four options are available.
Intelligent (default): When the business I/O is small, the RAID I/O will be increased
automatically; when the business I/O increases, the RAID I/O will be decreased
automatically.
Balance: Balance the business I/O and the RAID I/O to guarantee 3MB/s minimum speed
for the RAID I/O. This option is usually used when the business I/O is large and the array
rebuilding or array initialization needs to be ensured.
Performance Priority: The RAID I/O will be stopped as long as business I/O is processed.
This option is commonly used for business test with high performance requirement.
Protection Priority: Keep the RAID I/O as a priority and the business I/O will be affected.
This option is mainly used to complete the array rebuilding or array initialization as soon as
possible when there is no business I/O.
6. Select the physical disks from the list for creating the array.
7. Click the OK button, and confirm the following pop-up dialog box.
8. Click the Close button to finish the settings. And the created array will be displayed on the
list on the array management interface.
 Only the enterprise-class disks are allowed for creating the array.
 At least 3 physical disks must be selected for creating RAID 5.
 While creating RAID, it is recommended to select the physical disks with the same model and
capacity to maintain better performance of RAID.
 Array initialization may bring some pressure on the system and cause an effect to the
performance of the current business.
Figure 6. 11 Pop-up Dialog Box
Figure 6. 12 Successfully Added Array
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