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+### How many volumes do I need?
+
+The SeaweedFS volume here is different from common storage volume.
+| SeaweedFS Volume | Common Volume |
+| --- | --- |
+| A disk file | A disk |
+The following is all about SeaweedFS volumes.
+
+SeaweedFS assumes there are many SeaweedFS volumes. Data placement, replication, collection, S3 buckets, TTL, CSI mount, etc, are all based on volumes. So if the error is `no free volumes left`, please add more volumes.
+
+The default volume size is 30GB, and default to 8 volumes. Very likely you would need to customize a bit. Either through reducing the volume size, or increasing the `-max` value.
+
 ### How to access the server dashboard?
 SeaweedFS has web dashboards for its different services: