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Welcome to the HP Instant Capacity
User’s Guide for versions 8.x. Hewlett-Packard’s
Instant Capacity software product provides the ability to instantly
increase or decrease computing capacity on specified HP enterprise
servers.
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 | NOTE: The name of the product has changed from Instant
Capacity on Demand (or iCOD) to HP Instant Capacity for HP 9000 and
HP Integrity Servers, also known as Instant Capacity or iCAP. In addition,
Temporary Capacity on Demand (TiCOD) is now called Temporary Instant
Capacity, or TiCAP. In this version, many of the commands, warning
messages and error messages have been changed to refer to the software
as iCAP. However, some internal files may still be named or refer
to iCOD.For simplicity and commonality, this book uses
the HP-UX commands in all examples. Refer to Appendix B for details on OpenVMS command equivalents. |
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With Instant Capacity, you initially purchase
an HP enterprise server with a specified amount of active processing
capacity, and a specified amount of inactive processing capacity.
Processing capacity consists of the system components:
Processors containing
cores
For each type of component, the number that can
be active is equal to the number of usage rights applied to the complex
for that type of component. Components purchased with a part number
identifying them as “Instant Capacity” and without the
label “Right to Use” come without usage rights. Components
which are not labeled as Instant Capacity implicitly include usage
rights that can be applied to any component of that type installed
on the complex.
Prior to activation of an inactive component,
additional usage rights must be obtained. The fundamental method is
to purchase usage rights by purchasing the appropriate Instant Capacity
products that include the label “Right to Use (RTU)”.
HP then supplies a Right to Use (RTU) codeword. When the codeword
is applied to the HP Enterprise server, the inactive component can
be activated.
Additional methods for activating components for
which usage rights have not been purchased include:
If an HP-UX server is
a member of a Global Instant Capacity Group (GiCAP), and if extra
capacity is available from other members of the group, capacity may
be “borrowed” from another member of the group. Global
Instant Capacity is described in Chapter 7.
You may purchase additional
Temporary Instant Capacity (TiCAP) and apply the temporary capacity
codeword in order to activate one or more cores for a temporary period
of time. Temporary Instant Capacity is described in Chapter 5. If a server is a member
of a Global Instant Capacity Group, temporary capacity can be shared
between members of the group.
You may temporarily activate
one or more inactive cores using the Instant Access Capacity (IAC)
provided with the initial purchase of the Instant Capacity component.
Instant Access Capacity is exactly the same as Temporary Instant Capacity
except it is automatically provided with an Instant Capacity component
and is not separately purchased. It provides an immediate buffer of
temporary capacity in case extra capacity is needed before there is
time to purchase an RTU codeword, a TiCAP codeword, or to setup a
GiCAP group on an HP-UX system.
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 | IMPORTANT: It is always a good idea to keep some quantity
of temporary capacity in reserve. Purchase of codewords may take one
or more days, so having a buffer of temporary capacity allows you
to avoid delays in activation of additional cores. The Instant Access
Capacity provides this buffer initially, but as that capacity is depleted,
ongoing purchases of additional Temporary Instant Capacity are recommended
to replenish this capacity. |
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The Instant Capacity software product is a part
of the HP Utility Pricing Solutions (formerly On Demand Solutions)
program.
This user’s guide provides you with the
most recent information on using the Instant Capacity versions 8.x
software to manage processing capacity in your HP enterprise server.
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| NOTE: All personnel with system administrator access
(that is, root login privileges) to an Instant
Capacity system should read and understand the contents of this document
and the implications of increasing or decreasing processing capacity. |
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