Hi,  It is not advisable to enter maintenance mode, when a rebuild/rebalance is currently occurring.  Hope this helps, Kind regards.  Mark
Hello guys,  Can I set Maintenance Mode to an SDS while a Rebuild/Rebalance ?  At ScaleIO 2.0 User guide I see the following: To invoke maintenance mode, the following conditions are required: - Only one Fault Unit (or standalone SDS) can be in maintenance mode at any given time. - No other SDSs can be in degraded or failed state (force override can be used). - There must be adequate space on other SDSs for the additional backup (force override can be used). Note Use of force override options when entering maintenance mode can lead to data unavailability while maintenance mode is activated  At the Managing Dell EMC ScaleIO Ready Nodes using Dell EMC OpenManage Essentials.pdf it mentions: 3.2.1 Meet prerequisites for maintenance The following prerequisites should be met: • ESXi servers should be in a cluster with high availability (HA), Distributed Resource Scheduling (DRS) and vMotion enabled. This will allow the administrator to update and reboot the server without impacting the virtual machines’ availability. • The administrator must verify in the ScaleIO GUI that: • No SDC or SDS is disconnected. • No other Fault Unit (standalone SDS) is in Maintenance Mode. There must be adequate space on other SDSs for additional backup. • No rebuild or rebalance is running in the background.  • No degraded capacity exists. • No SDS device is in error state.  Thank you in advance, Kleanthis
Maintenance mode during Rebuild / Rebalance?