Dell Compellent Series 40 - Manual (Page 229)

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Viewing Disk Space Usage Summary
• Unallocated Disk Space: not allocated, not used
• Space reserved by system
• Unusable bad disk sectors on disks, if any
• Number and capacity of spares, if any
• Number of unmanaged disks attached to the system, if any
• Number of external devices attached to the system, if any
Storage Consumption Trends
In addition to the amount of space consumed and available, view IO trends in the Storage
Consumption Trends window. This report displays the history of storage consumption for
each disk folder and each class of disk.
Data storage trends by disk class indicate which disks are getting increased use. Storage
trends by disk class can help you decide which disks to add if a system needs additional
space.

To view storage consumption trends
1 From the Storage Center View menu, choose Online Storage.
2 Click the Storage Consumption Trends tab. The Storage Consumption Trends window
appears, showing consumption by disk folder (by default, Assigned) and disk class.