Qsan XCubeSAN XS5224D, User Manual, Page: 242 / 339

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Figure 11-10 Create an Auto Tiering Pool Step 4
10. Disk properties can also be configured optionally in this step:
。
Enable Disk Write Cache : Check to enable the write cache option of disks. Enabling
disk write cache will improve write I/O performance but have a risk of losing data
when power failure.
。
Enable Disk Read-ahead : Check to enable the read-ahead function of disks. System
will preload data to disk buffer based on previously retrieved data. This feature will
efficiently improve the performance of sequential data retrieved.
。
Enable Disk Command Queuing : Check to enable the command queue function of
disks. Send multiple commands to a disk at once to improve performance.
。
Enable Disk Standby : Check to enable the auto spin down function of disks. The
disks will be spun down for power saving when they are idle for the period of time
specified.
11. Click the Next button to continue.