I saw a message "Waiting for resources" during executing sis.
What does this message mean?
hostname> sis status
Path State Status Progress
/vol/vol1 Enabled Idle Idle for 4372:06:35
/vol/vol2 Enabled Idle Idle for 4259:55:57
/vol/vol3 Enabled Active 2048 MB Searched
/vol/vol4 Enabled Active Waiting for resources
/vol/vol5 Enabled Active Waiting for resources
/vol/vol6 Enabled Active Waiting for resources
/vol/vol7 Enabled Initializing Initializing for 02:17:01
/vol/vol8 Enabled Idle Idle for 1662:03:24