HP StorageWorks P9000 Performance Advisor Software v5.4 User Guide (T1789-96328, April 2012)

The every day reduction in TB-Days is equal to the additional usable capacity because of which the
grace period has started.
NOTE:
Reduction or negative counting is only applicable for the installed TB-Days. It is not applicable for
Permanent licenses.
After 60 days grace period, P9000 Performance Advisor stops configuration data collection for any
additional usable capacities. It continues performance data collection for the existing usable capacity.
Example scenario 8
Consider the following points:
1. A P9000 disk array has a usable capacity of 50TB.
2. A Permanent license is installed on 11/23/2010 to monitor the 50TB usable capacity.
3. Due to a surge in storage requests around 11/30/2010, another 10TB usable capacity is added
for a duration of five days.
4. Because this is a short term unplanned request, it is addressed by installing 50TB-Days of Meter
based Term license on 11/30/2010.
5. After the installed TB-Days are consumed by 12/04/2010 and extra TB-Days are not added to
monitor the 10TB usable capacity, P9000 Performance Advisor does the following:
a. Enters the grace period after 1:00 PM on 12/04/2010 and 0TB-Days are available. The
following fields are updated with the latest TB-Days data:
• License Capacity: Displays 50TB, 0TB-Days
• License Status: Capacity Insufficient
• Term (Days): 0
• End Date: Expired
b. Begins reducing the installed TB-Days by 10TB every day starting from 12/05/2010:
• On 12/05/2010, 0TB-Days are reduced to –10TB-Days
• On 12/06/2010, –10TB-Days are reduced to –20TB-Days
• On 12/06/2010, –20TB-Days are reduced to –30TB-Days
• On 12/07/2010, –30TB-Days are reduced to –40TB-Days
• On 12/08/2010, –40TB-Days are reduced to –50TB-Days
• On 12/09/2010, –50TB-Days are reduced to –60TB-Days
6. The reduction in TB-Days continues till you install the appropriate TB-Days, so that P9000 Perform-
ance Advisor does the following:
• Shows positive TB-Days
• Ends the grace period for that particular P9000 disk array
7. So, if you want to install TB-Days on 12/09/2010 for a duration of five days, generate 110TB-
Days of Meter based Term license. Out of the 110TB-Days:
• 60TB-Days (6 days * 10TB) are used to nullify the reduction in installed TB-Days.
• 50TB-Days (5 days * 10TB) is required for P9000 Performance Advisor to continue monitoring
the 10TB usable capacity for another five days.
With 110TB-Days, P9000 Performance Advisor ends the grace period and continues to monitor
the 10TB usable capacity for another five days.
Managing licenses for XP and P9000 disk arrays46