Can parallel restores be performed on Greenplum databases?
If the number of segment hosts on the destination is the same as what was existing at the time of the backup, the Commvault software performs a parallel restore. If the number of segment hosts on the destination is different, the software performs a serialized restore. This is a Greenplum limitation.
How to prevent the SSH session idle timeout during Greenplum table-level restores?
Commvault uses a command-line utility to restore tables. This utility is run on the master node and it launches the restore agents on the segment nodes through an SSH connection to the segment nodes and waits until the restore agents complete the restore operation.
To prevent the SSH session idle timeout during the restore operation, on the segment node (sshds) and master node (ssh client), go to the /etc/ssh/sshd_config file, and set the idle timeout value for the following parameters:
ClientAliveCountMax
ClientAliveInterval