• Two of the four iSCSI host ports can be used for additional block level iSCSI access by other hosts.NOTE: The NX3600 connects to two of the four ports configured.Enabling Jumbo Frames On The MD Storage ArrayTo enable jumbo frames on all the iSCSI ports on the MD storage array:1. In the PowerVault MDSM, select the Hardware tab.2. Right-click the relevant controller.3. Select Configure → iSCSI Ports.The Configure iSCSI Ports screen is displayed.4. Click Advanced Port Settings.The Advanced Port Settings screen is displayed.5. Select Enable jumbo frames.6. In MTU size enter, 9000.7. Enable jumbo frames for each iSCSI port on the MD storage array.NOTE: On MD32x0i arrays, the configuration is done on ports dedicated to NAS.Considerations When Creating Disk Groups And Virtual DisksConsider the following when creating disk groups and virtual disks.One Disk Group (RAID 6), One Hot SpareSpace This option consists of one RAID 6 disk group with two virtual disks and a single hot spare. Thesingle RAID 6 disk group is made up of eleven, 2 TB hard drives. In RAID 6, the total availablespace for virtual disks is 18 TB as two hard drives are allocated for parity. The NAS clusterrequires pairs of equal sized virtual disks. Therefore, the disk group is divided into two 9 TBvirtual disks to evenly utilize all available space in the disk group. You now have 18 TB space toallocate for the NAS cluster.High Availability A RAID 6 disk group can continue to execute read and write requests to all its virtual disksafter any two concurrent disk failures. As long as there is enough time to rebuild between20