IBM 990 - Manual (Page 137)

Chapter 5. Cryptography 125
In the z990, there can be a maximum of six PCI Cryptographic Accelerator (PCICA) features
(two per I/O cage), along with a maximum of four PCIX Cryptographic Coprocessor features.
The combined number of PCIXCC and PCICA features on a z990 cannot exceed eight.
Within these parameters, the PCXICC and PCICA features can coexist in any combination.
This scalability provides increasing cryptographic processing capacity as customers expand
their use of e-business applications requiring cryptographic processing.
5.3 Cryptographic hardware features
This section describes the three cryptographic hardware features and the feature codes
associated with the cryptographic functions of the z990.
5.3.1 PCIX Cryptographic Coprocessor feature
Each PCIX Cryptographic Coprocessor feature contains one cryptographic coprocessor card.
The z990 allows for up to four PCIXCC features (or cards) to be installed.
The card is attached to an STI and has no other external interfaces. Removal of the card or
feature “zeroizes” the content. A physical layout of the PCIXCC card is shown in Figure 5-1.
Figure 5-1 PCIX Cryptographic Coprocessor feature
Each PCIXCC feature has one cryptographic coprocessor card embedded in an adapter
package for installing in I/O slots of the z990 cage. The PCIXCC feature does not have ports
and does not use fiber optic or other cables. The PCIXCC cryptographic coprocessor card
can be shared by any logical partition defined in the system up to 15 logical partitions per
card.
The PCIX Cryptographic Coprocessor feature does not use CHPID, but is assigned a PCHID.
5.3.2 The PCICA feature
Each PCI Cryptographic Accelerator feature contains up to two cryptographic accelerator
cards. The physical layout of the PCICA card is illustrated in Figure 5-2 on page 126.
Important: Products that include any of the cryptographic feature codes contain
cryptographic functions that are subject to special export licensing requirements by the
United States Department of Commerce. It is the customer’s responsibility to understand
and adhere to these regulations whenever moving, selling, or transferring these products.
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