Definition of Terms:
Raw capacity: indicates the physical capacity of the storage system.
Available capacity: indicates the capacity obtained after the internal overheads such as RAID protection and metadata are deducted from the raw capacity.
Available capacity: total amount of user data that can be written to the storage device (data volume before deduplication and compression)
Total subscribed capacity: total capacity of created LUNs.
Used subscription capacity: sum of data written to all LUNs before deduplication and compression (not the capacity of data written to disks).
Available capacity:
When the used subscription capacity of the storage system reaches 90% of the available capacity in the license, an alarm is generated indicating that the available capacity is insufficient.
When the used subscription capacity is equal to the available capacity, the customer has a 90-day buffer period and can use the storage properly.
When the cache period expires, new LUNs cannot be created. However, the created LUNs can be read and written normally. As long as the deduplication and compression functions are enabled, the LUNs are not invalid. The preceding restrictions are weak. In this case, you can only purchase a new license to increase the available capacity. If the number of licenses reaches the upper limit, no capacity expansion is allowed.
Different storage types have different capacity licenses. For details, check the storage type and version and then query the specifications query assistant.
