Additional information:
Subject:
Hyper-V tuning recommendations for JovianDSS & DSS V7.
Contents:
NOTE:
Please proceed with the actions during a maintenance window as there might be a connection loss present.
You can find the script in the attachment, it is optimized for default ISCSI session settings, parameters below:
MaxRequestHoldTime = 240; <= not present in JovianDSS / DSS V7
SrbTimeoutDelta = 120; <= not present in JovianDSS / DSS V7
LinkDownTime = 240; <= not present in JovianDSS / DSS V7
WMIRequestTimeout = 15; <= not present in JovianDSS / DSS V7
MaxTransferLength = 262144;
MaxBurstLength = 1048576;
FirstBurstLength = 65536;
MaxRecvDataSegmentLength = 262144
Please check if the parameters on the ISCSI session in JovianDSS / DSS V7 and then run the script on the initiator side [Hyper-V], so the value matches:
[ JovianDSS CLI console: CTRL+ALT+W > Tuning options > iSCSI target options > Target options ]
[ DSS V7 CLI Console > CTRL+ALT+W > Tuning options > iSCSI daemon options > Target options ]
Then, reboot the initiator’s host [Hyper-V] in order to apply the proper configuration.
When using Windows Exchange Server we recommend increasing Windows disk TimeOutValue to 180 seconds.
Detailed guide: Windows Disk Timeouts and Exchange Server