Optimizing host server I/O performance

ShadowImage User Guide

Part Number

Creating, splitting, and resynchronizing SI pairs can affect host server I/O performance. You can take the following actions to minimize the impact of pair operations on host server I/O performance:

  • When you are creating pairs:
    • Create the pairs when the I/O load is relatively light.
    • Limit the number of pairs that you create at the same time.
  • When you are creating, splitting, or resynchronizing pairs, select a slower copy pace. You can enable the local replica option for copy pace, or you can select a specific copy pace while performing the task. In HDvM - SN, select Slower. In CCI, use the paircreate -c command, and set 1 or 2 as the copy pace.