备份策略选择

下表给出了各种备份策略的比较。

	gpfdist	hdfs	pg_dump	Raw Data Backupv
Parallel	Yes	Yes, Dynamic	No	No
Incremental Backup	No	Yes	No	Yes
Backup Location	Local FS	Hdfs FS	Local FS	Local FS, HDFS
Format	Text, CSV	Text, CSV	Text, Tar, Custom	Depends on format of row data
Compression	No	No	Yes	Only support custom format
Scalability	Good	Very Good	—	Good
Performance	Fast loading, Fast unloading	Fast loading, Fast unloading		Fast (Just file copy)