HP XP Application Performance Extender Software - Manual (Page 43)

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 Application Performance Extender stops controlling the P9500
disk array.
Example scenario 8
Consider the following points:
1. A P9500 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 Application Performance Extender 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 Applic-
ation Performance Extender does the following:
• Shows positive TB-Days
• Ends the grace period for that particular P9500 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 Application Performance Extender to con-
tinue monitoring the 10TB usable capacity for another five days.
With 110TB-Days, P9000 Application Performance Extender ends the grace period and continues
to monitor the 10TB usable capacity for another five days.
When fractions of a TB of additional usable capacity is monitored and the installed TB-Days are not
sufficient, P9000 Application Performance Extender considers it as a capacity violation and enters a
HP StorageWorks P9000 Application Performance Extender Software User Guide 43