Chapter 3. Virtualization
113
3.3.2 On/Off CoD
On/Off Capacity on Demand offers flexibility in meeting peak demands that are temporary in
duration. Inactive CoD processors and memory can be temporarily activated with a simple
request made by an operator from the HMC. The On/Off CoD usage is measured and billed in
one day increments. The one-day timing is based on a 24-hour time period, starting at the
time of activation. If the 595 server is shutdown during the 24-hour time period, the
clock
is
stopped while the server is powered off, and restarted when the server is powered on.
Implementing On/Off CoD for processors and memory consists of three steps:
1. Enablement
2. Activation
3. Billing
On/Off CoD enablement
Before you can use temporary capacity on a server, you must
enable
it for On/Off CoD. To do
this, order the no-charge On/Off processor or memory enablement feature. This initiates the
generation of usage and billing contracts that must be signed and returned to IBM. Upon
receipt of the signed contracts, IBM generates an enablement code, mails it to you, and posts
it on the Web. Enter the enablement code on the managing HMC to enable On/Off
functionality.
On/Off CoD activation
When you require On/Off CoD temporary capacity (for a processor or for memory), use the
HMC menu for On/Off CoD. Specify how many of the inactive processors or gigabytes of
memory you would like temporarily activated for a specified number of days. At the end of the
temporary period (days you requested), you must ensure the temporarily activated capacity is
available to be reclaimed by the server (not assigned to partitions), or you are billed for any
unreturned processor or memory days.
Time limits on enablement codes are:
The processor enablement code allows you to request a maximum of 360 processor days
of temporary capacity. If you have consumed 360 processor days, place an order for
another processor enablement code to reset the number of days that you can request
back to 360.
The memory enablement code lets you request up to 999 memory days of temporary
capacity. A memory day represents one GB of memory activated for one day. If you have
5696
0/32 GB DDR2 Memory (4X 8 GB)
50%
5697
0/64 GB DDR2 Memory(4X16 GB)
100%
8201
0/256 GB 533 MHz DDR2 Memory Package (32x #5694)
100%
8202
0/256 GB 533 MHz DDR2 Memory Package (16x #5695)
100%
8203
0/512 GB 533 MHz DDR2 Memory Package (32x #5695)
100%
8204
0/512 GB 400 MHz DDR2 Memory Package (16x #5696)
100%
8205
0/2 TB 400 MHz DDR2 Memory Package (32x #5697)
100%
Memory
feature
Description
Minimum
activation
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