[thumbnail="screenshot/gui-ceph-pools.png"]
A pool is a logical group for storing objects. It holds **P**lacement
-**G**roups (PG), a collection of objects.
+**G**roups (`PG`, `pg_num`), a collection of objects.
-When no options are given, we set a
-default of **64 PGs**, a **size of 3 replicas** and a **min_size of 2 replicas**
-for serving objects in a degraded state.
+When no options are given, we set a default of **128 PGs**, a **size of 3
+replicas** and a **min_size of 2 replicas** for serving objects in a degraded
+state.
-NOTE: The default number of PGs works for 2-6 disks. Ceph throws a
-"HEALTH_WARNING" if you have too few or too many PGs in your cluster.
+NOTE: The default number of PGs works for 2-5 disks. Ceph throws a
+'HEALTH_WARNING' if you have too few or too many PGs in your cluster.
It is advised to calculate the PG number depending on your setup, you can find
the formula and the PG calculator footnote:[PG calculator
Destroy CephFS
~~~~~~~~~~~~~~
-WARN: Destroying a CephFS will render all its data unusable, this cannot be
+WARNING: Destroying a CephFS will render all its data unusable, this cannot be
undone!
If you really want to destroy an existing CephFS you first need to stop, or