IBM z/OS - page 73

• Addition of ISHELL support for zFS.

• Ability to perform I/O operations in parallel for a zFS

aggregate that spans multiple DASD volumes. This is

designed to provide improved performance when using

multi-DASD volume aggregates.

• Support for 64-bit user virtual buffer addresses.

The Hierarchical File System (HFS) functionality has been

stabilized. HFS is expected to continue shipping as part of

the operating system and will be supported in accordance

with the terms of a customer’s applicable support agree-

ment. IBM intends to continue enhancing zFS functional-

ity, including RAS and performance capabilities, in future

z/OS releases. All requirements for UNIX ﬁ le services are

expected to be addressed in the context of zFS only.

Distributed File Services (DFS) Server Message Block

(SMB)

Microsoft® Windows® networking compatible ﬁ le and print

serving is available in z/OS with Native SMB File and Print

Serving for Windows Clients. SMB ﬁ le serving enables

z/OS to share HFS, zFS, Sequential ﬁ les and Record Files

Systems (RFS) such as PDS, PDS/E or VSAM data sets

with Windows workstations. SMB can automatically handle

the conversion between ASCII and EBCDIC, making full

use of USS ﬁ le tagging Access Control Lists (ACLs) sup-

port. This enhances the ability to develop applications on

Windows and deploy on z/OS. z/OS also supports printing

of SMB ﬁ les without requiring that code be installed on the

clients and without requiring unique printer setup on the

workstations.

SMB Support has been further enhanced in z/OS 1.4 by:

• Simpliﬁ ed user administration with Windows Domain ID

mapping

• Performance improvements with RFS and large PDS or

PDS/E ﬁ le systems

• Exploitation of zFS performance

• Network File System (NFS) acts as a ﬁ le server to work-

stations, personal computers, or other authorized sys-

tems in a TCP/IP network. It also provides a z/OS client.

The remote data sets or ﬁ les are mounted from the

mainframe (z/OS) to appear as local directories and ﬁ les

on the client system. NFS also provides access to the

Hierarchical File System (HFS) and zSeries File System

(zFS).

Internet Services

z/OS Version 1 Release 6 base elements

IBM HTTP Server

z/OS Version 1 Release 6 optional no charge features

IBM HTTP Server North America Secure

TThe IBM HTTP Server offers HTTP 1.1 compliance, sup-

port for Java technology, and the ability to manage Internet

processing through the Workload Manager (WLM). Ben-

eﬁ ts can include:

• Utilization of large storage capacity

• Single point of entry and control

• Consolidation of multiple Web sites

• Exploitation of z/OS WL