Migrate to Danube document guide

https://wiki.opnfv.org/display/DOC

Change-Id: I85535f158022fe0aeb7c888273dc81fbbf4ddeda
Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. (c) 2015 Dell Inc.
+.. (c) 2016 ZTE Corp.
+
+
+Storage Suite
+=============
+
+The QTIP benchmark suite aims to evaluate storage components within an OPNFV platform.
+For Brahamaputra release, FIO would evaluate File System performance for the host machine.
+It will also test the I/O performance provided by the hypervisor(KVM) when Storage benchmarks are run inside VMs.
+
+QTIP storage test cases consist of:
+
+**1. FIO Job to benchmark baremetal file system performance**
+
+**2. FIO Job to bechmark virtual machine file system performance**
+
+**Note: For Brahmaputra release, only the Ephemeral Storage is being tested. For C release persistent block and object storage would be tested.**
+
+The FIO Job would consist of:
+
+1. A file size of 5GB
+2. Random Read 50%, Random Write 50%
+3. Direct I/O
+4. Asynch I/O Engine
+5. I/O Queue depth of 2
+6. Block size :4K
+
+For this Job, I/O per second would be measured along mean I/O latency to provide storage performance numbers.