Accommodate functions for the zEC12 and zBC12 servers to be discontinued on future servers
Description
The
following changes in hardware support could affect your environment.
Make the appropriate changes as needed.
- Removal of support for connections to an STP Mixed CTN. The zEC12 and zBC12 are the last System z servers to support connections to an STP Mixed CTN. This also includes the Sysplex Timer (9037). After the zEC12 and the zBC12, servers that require Time synchronization, such as to support a base or Parallel Sysplex, will Require Server Time Protocol (STP) and all servers in that network must be configured in STP-only mode.
- Removal of support for Ethernet half-duplex operation and 10 Mbps link data rate. The OSA-Express4S 1000BASE-T Ethernet feature is planned to be the last copper Ethernet feature to support half-duplex operation and a 10 Mbps link data rate. The zEC12 and zBC12 servers are planned to be the last IBM® System z® servers to support half-duplex operation and a 10 Mbps link data rate for copper Ethernet environments. Any future 1000BASE-T Ethernet feature will support full-duplex operation and auto-negotiation to 100 or 1000 Mbps exclusively. This hardware statement of direction is fulfilled with the delivery of OSA-Express5S.
- Removal of ISC-3 support on System z. The zEC12 and zBC12 are planned to be the last System z servers to offer support of the InterSystem Channel-3 (ISC-3) for Parallel Sysplex environments at extended distances. ISC-3 will not be supported on future System z servers as carry forward on an upgrade. Previously, it was announced that the IBM zEnterprise 196 (z196) and IBM zEnterprise 114 (z114) servers were the last to offer ordering of ISC-3. Enterprises should continue migrating from ISC-3 features (#0217, #0218, #0219) to 12x InfiniBand (#0171 - HCA3-O fanout) or 1x InfiniBand (#0170 - HCA3-O LR fanout) coupling links.
- Removal of OSA-Express3 support on System z. The zEC12 and zBC12 servers are planned to be the last System z servers to offer support of the Open System Adapter-Express3 (OSA-Express3 #3362, #3363, #3367, #3370, #3371) family of features. OSA-Express3 will not be supported on future System z servers as carry forward on an upgrade. Enterprises should continue migrating from the OSA-Express3 features to the OSA-Express4S (#0404, #0405, #0406, #0407, #0408) and OSA-Express5S features (#0413, #0414, #0415, #0416, #0417).
- Removal of FICON® Express4 support on System z. The zEC12 and zBC12 servers are planned to be the last System z servers to offer support of the FICON Express4 features (#3321, #3322). FICON Express4 will not be supported on future System z servers as carry forward on an upgrade. Enterprises should continue migrating from the FICON Express4 features to the FICON Express8S features (#0409, #0410).
- Removal of Crypto Express3 support on System z. The zEC12 and zBC12 servers are planned to be the last System z servers to offer support of the Crypto Express3 features (#0864 and #0871 - zBC12). Crypto Express3 will not be supported on future System z servers as carry forward on an upgrade. Enterprises should continue migrating from the Crypto Express3 features to the Crypto Express4S feature (#0865).
- IBM System z Integrated Information Processor (zIIP) and IBM System z Application Assist Processor (zAAP) simplification. The zEC12 and zBC12 are planned to be the last System z servers to offer support for zAAP specialty engine processors. IBM intends to continue support for running zAAP workloads on zIIP processors ("zAAP on zIIP"). This is intended to help simplify capacity planning and performance management, while still supporting all the currently eligible workloads.
- Removal of support for the HCA2-O fanouts for 12x IFB and 1x IFB InfiniBand coupling links. The zEC12 and zBC12 are planned to be the last System z servers to support the following features as carry forward on an upgrade: HCA2-O fanout for 12x IFB coupling links (#0163) and HCA2-O LR fanout for 1x IFB coupling links (#0168). Enterprises should continue migrating to the HCA3-O fanout for 12x IFB (#0171) and the HCA3-O LR fanout for 1x IFB (#0170).
- Removal of support for IEEE 802.3 Ethernet frame types. The zEC12 and zBC12 are planned to be the last System z servers to support IEEE 802.3 Ethernet frame types. All OSA-Express features supported on future System z servers are planned to support DIX Version 2 (DIX V2) exclusively.
Note: IBM's statements regarding its plans, directions, and
intent are subject to change or withdrawal without notice at IBM's
sole discretion. Information regarding potential future products is
intended to outline our general product direction and it should not
be relied on in making a purchasing decision. The information mentioned
regarding potential future products is not a commitment, promise,
or legal obligation to deliver any material, code, or functionality.
Information about potential future products may not be incorporated
into any contract. The development, release, and timing of any future
features or functionality described for our products remains at our
sole discretion
Table 1 provides more details about this migration action. Use this information to plan your changes to the system.
| Element or feature: | Multiple. |
|---|---|
| When change was introduced: |
|
| Applies to migration from: | z/OS V2R2, V2R1 and z/OS V1R13. |
| Timing: | Before migrating to a zEC12 or zBC12 server. |
| Is the migration action required? | No, but recommended if you are using a zEC12 or zBC12 server because this is the last server that will support the changes mentioned in "Description". |
| Target system hardware requirements: | See Description. |
| Target system software requirements: | None. |
| Other system (coexistence or fallback) requirements: | None. |
| Restrictions: | None. |
| System impacts: | None. |
| Related IBM Health Checker for z/OS® check: | None. |
Steps to take
Take into account the statements in Description as you migrate to zEC12 or zBC12.
Reference information
None.