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The z990 offers 4 models, the A08, B16, C24 and D32,
which can be confi gured to give customers a highly scal-
able solution to meet the needs of both high transaction
processing applications and the demands of e-business.
The new model structure provides between 1-32 confi gu-
rable Processor Units (PUs) which can be characterized
as either CPs, IFLs, ICFs, or zAAPs. A new easy-to-enable
ability to “turn off” CPs is available on z990 (a similar offer-
ing was available via RPQ on z900). The objective is to
allow customers to purchase capacity for future use with
minimal or no impact on software billing. An MES feature
will enable the CPs for use where the customer requires
the increased capacity. There are a wide range of upgrade
options available which are indicated in the z990 models
chart.
Unlike other zSeries server offerings, it is no longer pos-
sible to tell by the hardware model (A08, B16, C24, D32)
the number of PUs that are being used as CPs. For soft-
ware billing purposes only, there will be a “software” model
associated with the number of PUs that are characterized
as CPs. This number will be reported by the Store System
Information (STSI) instruction for software billing purposes
only. There is no affi nity between the hardware model and
the number of CPs. For example, it is possible to have a
Model B16 which has 5 PUs characterized as CPs, so for
software billing purposes, the STSI instruction would report
305. The more normal confi guration for a 5-way would be
an A08 with 5 PUs characterized as CPs. The STSI instruc-
tion would also report 305 for that confi guration.
z990 Models
z990 and IBM ^ On/Off Capacity on Demand
IBM ^ On/Off Capacity on Demand (On/Off CoD)
is offered with z990 processors to provide a temporary
increase in capacity to meet customer's peak workload
requirements. The scope of On/Off Capacity on Demand
is to allow customers to temporarily turn on unassigned/
unowned PUs available within the current model for use as
CPs or IFLs. Temporary use of CFs, memory and channels
is not supported.
Before customers can order temporary capacity, they must
have a signed agreement for Customer Initiated upgrade
(CIU) facility. In addition to that agreement, they must
agree to specifi c terms and conditions which govern the
use of temporary capacity.
Typically, On/Off Capacity on Demand will be ordered
through CIU, however there will be an RPQ available if no
RSF connection is present.
301 302303 304 305 306 307 308 309 310 311 312 313314 315 316 317 318 319 320 321 322 323 324325 326 327 328 329 330 331 332
Model B16
Model D32
Model C24
* S/W Model refers to number of installed CPs. Reported by STSI instruction. Model 300 does not have any CPs.
Note: For MSU values, refer to: ibm.com/servers/eserver/zseries/library/swpriceinfo/
*S/W
Model
Model A08
z990 Family Models