IBM 525 - Manual (Page 2)

(concurrent i5/OS users).
Key prerequisites
i5/OS V5R4
Planned availability date
April 20, 2007
Description
Earlier model 520 systems provided unlimited i5/OS user license entitlements but offered a
range of systems with small-to-large amounts of computing capacity (batch and 5250 CPW). A
growing number of small- to mid-size clients requested larger amounts of computing capacity for
a wider range of applications. The new i5/OS Licensing by User offered with the model 525 gives
you added flexibility. If you have a relatively modest number of system users, you may find the
model 525 to be a good match for your business. For example, the 1/2-way 9406-525 with one
processor activation offers a 3x CPW rating compared to the 1-way 9406-520 1200 CPW
Enterprise Edition. The model 525 software tier is P10 versus the model 520 1/2-way P20
software tier.
In addition to an i5/OS processor license entitlement, the model 525 includes license
entitlements for 30 to unlimited concurrent i5/OS users in blocks of 10 users. Also, if you have a
large number of "external" i5/OS users (clients, vendors, or business partners) and a more
modest number of "internal" i5/OS users (company employees or equivalent), a special external
unlimited user entitlement is available.
The model 525 offers several Capacity on Demand options that make it possible to activate
additional processor resource. Capacity Upgrade on Demand, On/Off Capacity on Demand,
Reserve Capacity on Demand, and Trial Capacity on Demand are available.
To take advantage of Capacity on Demand, you need to permanently activate only one of the
two processors. Then, as needed, a key activates the On/Off Capacity on Demand option in
order to satisfy capacity needs associated with business growth or peaks.
Using Capacity on Demand options and per processor granularity for i5/OS licensing and
software maintenance, you can efficiently allocate resource for your applications, regardless of
your operating environment.
The model 525 does not have an upgrade path to a larger model such as the 550 or 570;
however, upgrades into the model 525 from the model 520 or 810 are available. These upgrade
paths are essentially the same as the upgrade paths into the 520 1/2-way.
Each 525 system is built to your specific order and can be customized for your exact hardware
placement and IBM software preload. The model 525 offers an integrated set of hardware,
including two 1 Gbps Ethernet LAN ports and a disk, tape, or DVD drive controller in the base. It
is available as either a deskside/tower configuration or as a rack-mount configuration. As a
rack-mount configuration, it can be placed in a 19-inch rack and requires 4 EIA units or 4U.
The model 525 is a 1/2-way system that uses a 1.9 GHz POWER5+ processor with L3 cache. It
delivers 3800 or 7100 CPW (batch or 5250). The model 525 has a maximum of 32 GB of
memory, 278 disk drives, and 90 PCI slots.
Model 525 configurations overview
The minimum functional system consists of the base system unit, base features, and selected
priced features. It supports a large selection of I/O including a variety of LAN and WAN adapters,
an iSCSI adapter, SCSI tape and disk controllers, Fibre Channel adapters, twinax workstation
controllers, multiple I/O drawers/towers, and more.
Each model 525 system unit has:
• Maximum of 32 GB of memory
• Eight memory slots
• Six PCI-X slots
• Eight disk slots (four optionally enabled)
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