Install couchbase server 1.8.0r-55 on drive C with size 14 GB
Add another storage called drive D
Create custom data path of couchbase server on drive D (drive D has size 100 GB)
Load items to node until database size larger than 15 GB on drive D
Run cbbackup to backup data to any folder on drive D
After a while running, C drive will run out of free space and the node may crash.
When run cbbackup, sqlite will generate a temporary file etilqs-xxxx-xxxxx.xxxxxxx in drive C that may fill up all space in C drive.
We need add another args in cbbackup to custom this tmp sqlite to drive D to avoid cluster crashed.