Technical data

Solution Technology Overview
VMware Horizon View 5.3 and VMware vSphere for up to 2,000 Virtual
Desktops Enabled by Brocade Network Fabrics, EMC VNX, and EMC Next-
Generation Backup
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Alerting the user through the Capacity Threshold setting
You must configure proactive alerts when using a file system or storage
pools based on thin pools. Monitor these resources so that storage is
available for provisioning when needed to avoid capacity shortages.
Figure 8 explains why provisioning with thin pools requires monitoring.
Figure 9. Thin LUN space utilization
Monitor the following values for thin pool utilization:
 Total capacity, which is the total physical capacity available to
all LUNs in the pool
 Total allocation, which is the total physical capacity currently
assigned to all pool LUNs
 Subscribed capacity, which is the total host-reported capacity
supported by the pool
 Over-subscribed capacity, which is the amount of user capacity
configured for LUNs that exceed the physical capacity in a pool
The total allocation must never exceed the total capacity, but if it
approaches that point, add storage to the pools proactively before
reaching a hard limit.
Figure 10 shows the Storage Pool Properties dialog box in Unisphere, which
displays parameters such as Free, Percent Full, Total Allocation, Total
Subscription of physical capacity, Percent Subscribed, and
Oversubscribed for a system’s virtual capacity.