• 60TB-Days (6 days * 10TB) are used to nullify the reduction in installed TB-Days.
• 50TB-Days (5 days * 10TB) is required for PA to continue monitoring the 10TB physical usable
capacity for another five days.
With 110TB-Days, PA ends the grace period and continues to monitor the 10TB physical usable
capacity for another five days.
When fractions of a TB of additional physical usable capacity is monitored and the installed TB-
Days are not sufficient, PA considers it as a capacity violation and enters a grace period of 60 days. In
such a case, if you install the appropriate TB-Days, PA ends the grace period for that particular XP7 disk
array.
Example scenario 8
Consider the following points:
1. An XP7 disk array has a physical usable capacity of 75TB.
2. A Permanent license is installed on 11/24/2010 to monitor the 75TB physical usable capacity.
3. Due to a surge in storage requests around 11/30/2010, another 20TB physical usable capacity is
added for a duration of five days.
4. Because this is a short term unplanned request, it is addressed by installing 100TB-Days of Meter
based Term license on 11/30/2010.
5. As the physical usable capacity is beyond the Permanent licensed capacity, PA uses the 100TB-Days
of Meter based Term license. Based on the physical usable capacity consumed, PA uses the
appropriate TB-Days of Meter based Term license. Following are sample consumptions from day 1 to
day 3:
• 11/30/2010: 51.5TB monitored using 52TB-Days
• 12/01/2010: 20.3TB monitored using 21TB-Days
• 12/02/2010: 24.9TB monitored using 25TB-Days
6. As 4TB physical usable capacity is remaining and only 2TB-Days are available, PA does the following:
a. Enters 60 days grace period after 1:00 PM on 12/02/2010 and updates the following fields with the
latest TB-Days data:
• License Capacity: Displays 75TB, +2TB-Days
• License Status: Capacity Insufficient
• Term (Days): 0
• End Date: Expired
b. Begins reducing the installed TB-Days by 20TB every day starting from 12/03/2010, which is shown
as follows:
• On 12/03/2010, 2TB-Days are reduced to –18TB-Days
• On 12/04/2010, –18TB-Days are reduced to –38TB-Days
• On 12/05/2010, –38TB-Days are reduced to –58TB-Days
58 PA Licenses
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