1. Cluster Disks and Cluster File Storage
Identify where you want to place the quorum disk – the /mscs directory.

2. Cluster service uses managed (or shared) disks to enable nodes to access and control shared data and services in case of a node failure. You will select a location on one of the managed disks for the storage area where you will store cluster checkpoint and log files. These files help manage the cluster.

3. Cluster Disk Selection (Managed Disks)
You will need to identify which disks will be a part of the cluster. These managed disks will be available as a resource to Cluster service. Designating a disk as a managed disk allows Cluster service to use the small computer system interface (SCSI) reserve and the SCSI release command. The SCSI reserve command allows one node to gain access to a disk resource and denies access to other nodes that might try to use a reserved disk. The SCSI release command makes that disk resource available so that another node can reserve it.

4. You must specify which disks Cluster service will manage
You must specify which disks Cluster service will manage. By default, all of the disks on all of the buses other than the system bus will appear in the Managed disks list. Therefore, you need to remove disks if you do not want Cluster service to manage them.
Note: Both servers can access data on any unmanaged disk on the shared bus. Data corruption could occur if both servers access data on a shared disk at the same time.

5. Cluster File Storage
At this point of the installation, the Cluster Service Configuration Wizard will prompt you for the location of the Cluster service configuration files (\mscs). The disk that you identify for these files will also be known as the quorum disk. After installation, if you change the location of the quorum, Cluster service will move the cluster configuration files to the new disk location.

6. Quorum Disk Recommendations
The partition containing the disk must have a minimum of 50 megabytes (MB) of free space. A quorum disk size of 500 MB is generally recommended.
Dedicate a separate disk for a quorum resource so that if failover of a resource or application occurs, the cluster file storage disk will not also fail over.
Because the failure of the quorum disk would cause the entire cluster to fail, using a volume on a Redundant Array of Independent Disks (RAID) disk array is highly recommended.