I’ve already talked a bit about LUN’s and storage. Let’s put everything together. I’m using a QNAP TVS-871 (28Tb raw storage) to be the iSCSI target and provide the mapped LUN’s. The QNAP is configured as 2-disk RAID1, 5-disk RAID5 and the latter will contain the LUN’s for the Binsfeldius Cluster. In the remaining slot I have a 128Gb SSD as cachedrive for acceleration.
Boot storage
Each cluster node will use an iSCSI Remote Boot LUN of thin provisioned 10 Gb. This LUN contains the installed ESXi 6.0 operating system.
- Node 1 connects to iSCSI LUN “ttgbootn1″ (10Gb)
- Node 2 connects to iSCSI LUN “ttgbootn2″ (10Gb)
- Node 3 connects to iSCSI LUN “ttgbootn3″ (10Gb)
Cluster storage
The cluster itself will connect to two shared volumes of 930 Gb each, presented as iSCSI LUN “HyperStorage“ and “UltraStorage“. No rocket science to this number, it’s just where the slider stopped when I took it up to a terabyte, again 
These volumes will hold all the VM’s and are not mirrored. Protection against physical disk failure is still in-place as these volumes are placed on the RAID5 array.
Source storage
I have created a separate LUN to hold all the Operating System sources for the VM’s. This LUN is presented as “TTGSRC” and its size is 200 Gb thin provisioned.
DFS storage
I will be using DFS for centralized sharing of files among VM’s and use it as a central place to put user profiles. This storage is 200 Gb thin provisioned and will be connected to a VM through the clusternodes, where needed. The LUN is presented as “TTGDFS”.
QNAP Connections
This is what it looks like on the QNAP for a fully loaded cluster configuration.
