IBM-2007-04569-E-01
©2007 Sine Nomine Associates
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other purposes. The 64-bit real addressing mode may mean that the VSE system is able to run
without a page data set.
3.2.2 Storage Constraint Relief
z/VSE supports up to 8GB of real storage compared to the previous level of 2GB.
Impact:
In conjunction with the 64-bit real addressing support, machines with larger physical
memory may be more effectively used by the operating system.
3.2.3 New Pricing Metrics
As part of the announcement a Capacity Measurement Tool was described. It's purpose is to
facilitate the introduction of a new pricing mechanism known as Midrange Workload License
Charges (MWLC). This scheme is available on the IBM System z9 EC and z9 BC processors
only and provides for improved pric e performance with both full-capacity and sub-capacity
modes of operation.
Impact:
The ability to “pay for what you use” rather than pay for what
might
be used presents a
major opportunity for z/VSE sites to reduce their monthly software bill. A detailed analysis is
provided in the next section of this document.
3.2.4 Network Connectivity
Since z/VSE 3.1 there has been support for the Open Systems Adapter-Express2 1000BASE-T
Ethernet card that enables a larger network load to be supported compared to the previous
options.
Impact:
High-speed network support will enable VSE-based systems to ship data to and from the
network at gigabit speeds and facilitate faster response times to the end-users.
3.2.5 Security Enhancements
z/VSE 4.1 has implemented significant enhancements to its encryption support. z/VSE V4.1 is
designed to support 2048-bit RSA keys in addition to 512-bit and 1024-bit RSA keys. z/VSE now
supports the CP Assist for Cryptographic Functions (CPACF) for using Advanced Encryption
Standard (AES) for 128-bit keys.
TCP/IP is designed to use 512-bit and 1024-bit RSA keys transparently. TCP/IP will support
2048-bit RSA key with a Crypto Express2 adapter in either coprocessor or accelerator mode.
Similarly, z/VSE V4.1 e-business Connectors are designed to support 2048-bit RSA keys in
addition to 512-bit and 1024-bit RSA keys. TCP/IP also supports AES.
In addition z/VSE now supports the IBM System Storage TS1120 encrypting tape drive which
will encrypt data using the 256-bit AES algorithm. Management of keys is performed using IBM
Encryption Key Manager (EKVM) which is a Java-based application running on z/OS, AIX,
Linux, i5/OS, HP, Sun, and Windows systems.
