Updated Tiered Storage (markdown)

Tiered-Storage.md

@@ -31,6 +31,11 @@ https://github.com/chrislusf/seaweedfs/wiki/Path-Specific-Configuration
 
 Custom Tags are supported for the disk types. Besides the default `hdd` and `ssd`, you can use any lower-cased tags, such as `ssd1`, `hdd2`, `nvme`, `raid6`, etc.
 
+Same as the default disk types, you can place the data by custom disk types.
+```
+fs.configure -locationPrefix=/buckets/fast_ -disk=nvme -apply
+```
+
 You can also schedule admin scripts to move volumes from one tier to another tier. See below about `volume.tier.move`.
 
 ## Change Volume Disk Type