data cluster (e.g., OpenStack, CloudStack, etc).
-.. tip:: Check out the Ceph blog too.
+.. tip:: Check out the `Ceph blog`_ too.
CPU
consider your selection of disk controllers to ensure that they do not create
a performance bottleneck.
-.. tip:: The Ceph blog is often an excellent source of information on Ceph
+.. tip:: The `Ceph blog`_ is often an excellent source of information on Ceph
performance issues. See `Ceph Write Throughput 1`_ and `Ceph Write
Throughput 2`_ for additional details.
-
+.. _Ceph blog: https://ceph.com/community/blog/
.. _Ceph Write Throughput 1: http://ceph.com/community/ceph-performance-part-1-disk-controller-write-throughput/
.. _Ceph Write Throughput 2: http://ceph.com/community/ceph-performance-part-2-write-throughput-without-ssd-journals/
.. _Mapping Pools to Different Types of OSDs: ../../rados/operations/crush-map#placing-different-pools-on-different-osds