How do I ensure iSCSI initiator connections during HA switch-over in QuTS hero?
Last modified date:
2025-08-19
Applicable Products
QuTS hero h5.3.0 and later versions
Windows or Windows Server
Explanation
QuTS hero h5.3.0 introduces High Availability (HA) Manager. When the system switches over from the active node to the passive node, it may take some time to transfer data between the two nodes. If the iSCSI initiator timeout is too short, the connection may be dropped before the process completes.
Solution
We recommend allowing sufficient request hold time to ensure the stability of iSCSI initiator connections during HA switch-over. You can do this by increasing the hold time in the Windows registry:
HKLM\SYSTEM\CurrentControlSet\Control\Class\{4D36E97B-E325-11CE-BFC1-08002BE10318}\0001(?)\Parameters\MaxRequestHoldTime
Set the value to 300
Note
- The registry file may be located in a folder named 0001, 0002, 0003, etc, depending on the actual configuration of the device.
- HKLM is an abbreviation for HKEY_LOCAL_MACHINE.
