IBM Systems Magazine, Mainframe - July/August 2015 - 41

ADMINISTRATOR

EDITOR'S NOTE: This is part
one of a two-part series on the
IBM DS8870 storage subsystem
on the IBM z13 platform.

DS8870 INNOVATIONS in
SUPPORT of the z13 Platform
New technologies include those aimed to reduce costs and improve resilience,
scale and performance

I

BM z Systems* and storage technologies strive to deliver on certain core principles.
Among them are adding value for client workloads with improved reliability,
availability, performance and reduction in total cost of ownership. IBM also strives
to match increased capabilities and capacity with increased I/O capabilities, I/O rates,
bandwidth and latency. These are essential for existing workloads such as transaction
processing and client demands for cloud, analytics, mobile, social and security.
Christopher
Colonna
is the FICON
channel firmware
execution
team lead for
z Systems, IBM
Systems.
Roger G.
Hathorn is a
Senior Technical
Staff Member
for enterprise
storage I/O
architecture and
development,
IBM Systems.
Harry M.
Yudenfriend
is an IBM Fellow
for storage
development and
mainframe I/O
technology, IBM
Systems.

Ever-increasing mobile- and
analytics-initiated I/O activity
stresses older IT systems' capabilities, bombarding them with
requests even as they provide
new data to existing applications. Also, accelerating database
transactions is good for business;
consistently fast transactions
yield higher user productivity and
satisfaction. The IBM z13* system
and DS8870 storage subsystem
have been designed to meet these
ever-increasing demands.

More Speed
and Capacity
New FICON* Express16S channels available with the z13
platform provide additional I/O
capacity to help balance the
new processing power with I/O

capability. In IBM testing, the
modestly increased start rate
of about 6.5 percent makes the
maximum I/O start rate about
98,000 per second. Channel
bandwidth is substantially
improved to 2,600 MB/second,
bidirectional. This represents
a 63 percent improvement in a
single channel's I/O bandwidth.
Perhaps the most important
capability provided by the 16
Gb Fibre Channel (GFC) technology is a substantial reduction
in I/O latency. When the FICON
Express16S channel is used in
combination with the DS8870
storage and 16GFC Host Adapter
(HA) for a true end-to-end link
speed of 1,600 MB/second,
substantial improvements in I/O
latency are achieved.

DB2* commit elapsed times
with DS8870 zHyperWrite*
technology combined with FICON
Express16S on the z13 processor
and 16GFC HA in the DS8870
were substantially improved by
up to 61 percent as compared
to FICON Express8S on an IBM
zEnterprise* EC12 without
zHyperWrite.
Large Systems Performance Reference IMS workload with FICON
Express16S technology was
demonstrated for the write ahead
data set (WADS) and online log
data set (OLDS). The IMS WADS
data set, a critical path for IMS
latency requirements, is improved
by 14 percent as it does not yet
exploit z Systems High Performance FICON (zHPF) protocols.
The IMS OLDS data set, however,

ibmsystemsmag.com JULY/AUGUST 2015 // 41


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IBM Systems Magazine, Mainframe - July/August 2015

Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - July/August 2015

Table of Contents
Editor's Desk: An important note
IBM Perspective: Transforming travel end to end
Partner PoV: Maximize the platform's business value by addressing challenges now
IT Today: Infrastructure matters: Myth or truth?
Case Study: Turning Complexity Into Simplicity: Vissensa Ltd. deploys an IBM Enterprise Cloud System to relieve the IT burdens of its clients
Cover Story: Industry Importance: Applying disruptive technologies in a nondisrputive way helps mainframe clients achieve business efficiency
Feature: Security Notification: Mainframe companies must be proactive and educated in testing and protection, expert says
Feature: Industry Improvements: Clients from five key industries highlight what's possible with IBM mainframe
Tech Showcase: Businesses must look at the big picture to take advantage of analytics
HotTECH Products
Administrator: New technologies with the IBM z13 and DS8870 systems aim to reduce costs and improve resilience, scale and performance
Solutions: ARCAD- Anonymizer; FDRPASVM, MVT Vault, STEPLIB-Rx 3.1; Topaz, ISPW V4.4, Savvytest 2.1
Stop Run: 'Things just clicked' for IBMer looking for his path
Reference Point - Global Events, Education, Resources for Mainframe
2015 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - July/August 2015 - Intro
IBM Systems Magazine, Mainframe - July/August 2015 - Cover1
IBM Systems Magazine, Mainframe - July/August 2015 - Cover2
IBM Systems Magazine, Mainframe - July/August 2015 - 1
IBM Systems Magazine, Mainframe - July/August 2015 - Table of Contents
IBM Systems Magazine, Mainframe - July/August 2015 - 3
IBM Systems Magazine, Mainframe - July/August 2015 - 4
IBM Systems Magazine, Mainframe - July/August 2015 - 5
IBM Systems Magazine, Mainframe - July/August 2015 - Editor's Desk: An important note
IBM Systems Magazine, Mainframe - July/August 2015 - 7
IBM Systems Magazine, Mainframe - July/August 2015 - IBM Perspective: Transforming travel end to end
IBM Systems Magazine, Mainframe - July/August 2015 - 9
IBM Systems Magazine, Mainframe - July/August 2015 - Partner PoV: Maximize the platform's business value by addressing challenges now
IBM Systems Magazine, Mainframe - July/August 2015 - 11
IBM Systems Magazine, Mainframe - July/August 2015 - IT Today: Infrastructure matters: Myth or truth?
IBM Systems Magazine, Mainframe - July/August 2015 - 13
IBM Systems Magazine, Mainframe - July/August 2015 - Case Study: Turning Complexity Into Simplicity: Vissensa Ltd. deploys an IBM Enterprise Cloud System to relieve the IT burdens of its clients
IBM Systems Magazine, Mainframe - July/August 2015 - 15
IBM Systems Magazine, Mainframe - July/August 2015 - 16
IBM Systems Magazine, Mainframe - July/August 2015 - 17
IBM Systems Magazine, Mainframe - July/August 2015 - Cover Story: Industry Importance: Applying disruptive technologies in a nondisrputive way helps mainframe clients achieve business efficiency
IBM Systems Magazine, Mainframe - July/August 2015 - 19
IBM Systems Magazine, Mainframe - July/August 2015 - 20
IBM Systems Magazine, Mainframe - July/August 2015 - 21
IBM Systems Magazine, Mainframe - July/August 2015 - Feature: Security Notification: Mainframe companies must be proactive and educated in testing and protection, expert says
IBM Systems Magazine, Mainframe - July/August 2015 - 23
IBM Systems Magazine, Mainframe - July/August 2015 - 24
IBM Systems Magazine, Mainframe - July/August 2015 - 25
IBM Systems Magazine, Mainframe - July/August 2015 - 26
IBM Systems Magazine, Mainframe - July/August 2015 - 27
IBM Systems Magazine, Mainframe - July/August 2015 - Feature: Industry Improvements: Clients from five key industries highlight what's possible with IBM mainframe
IBM Systems Magazine, Mainframe - July/August 2015 - 29
IBM Systems Magazine, Mainframe - July/August 2015 - 30
IBM Systems Magazine, Mainframe - July/August 2015 - 31
IBM Systems Magazine, Mainframe - July/August 2015 - 32
IBM Systems Magazine, Mainframe - July/August 2015 - Tech Showcase: Businesses must look at the big picture to take advantage of analytics
IBM Systems Magazine, Mainframe - July/August 2015 - 34
IBM Systems Magazine, Mainframe - July/August 2015 - 35
IBM Systems Magazine, Mainframe - July/August 2015 - 36
IBM Systems Magazine, Mainframe - July/August 2015 - HotTECH Products
IBM Systems Magazine, Mainframe - July/August 2015 - 38
IBM Systems Magazine, Mainframe - July/August 2015 - 39
IBM Systems Magazine, Mainframe - July/August 2015 - 40
IBM Systems Magazine, Mainframe - July/August 2015 - Administrator: New technologies with the IBM z13 and DS8870 systems aim to reduce costs and improve resilience, scale and performance
IBM Systems Magazine, Mainframe - July/August 2015 - 42
IBM Systems Magazine, Mainframe - July/August 2015 - 43
IBM Systems Magazine, Mainframe - July/August 2015 - 44
IBM Systems Magazine, Mainframe - July/August 2015 - Solutions: ARCAD- Anonymizer; FDRPASVM, MVT Vault, STEPLIB-Rx 3.1; Topaz, ISPW V4.4, Savvytest 2.1
IBM Systems Magazine, Mainframe - July/August 2015 - 46
IBM Systems Magazine, Mainframe - July/August 2015 - 47
IBM Systems Magazine, Mainframe - July/August 2015 - Stop Run: 'Things just clicked' for IBMer looking for his path
IBM Systems Magazine, Mainframe - July/August 2015 - Cover3
IBM Systems Magazine, Mainframe - July/August 2015 - Cover4
IBM Systems Magazine, Mainframe - July/August 2015 - Reference Point - Global Events, Education, Resources for Mainframe
IBM Systems Magazine, Mainframe - July/August 2015 - 2015 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - July/August 2015 - SE2
IBM Systems Magazine, Mainframe - July/August 2015 - SE3
IBM Systems Magazine, Mainframe - July/August 2015 - SE4
IBM Systems Magazine, Mainframe - July/August 2015 - SE5
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