IBM Systems Magazine, Mainframe - March/April 2018 - 14

FOCUS ON STORAGE

operations pushes cloud
technology into traditional IT.
At the same time that clouds are
changing the ownership model
for storage, cognitive computing
is changing the way applications
use data and the storage services
that would benefit them. The
attributes of cognitive systems
are that they:
*

*

*

*

Understand a variety of data
sources and imagery the way
humans do
Reason and extract
underlying principles by
forming hypotheses based
on observation of data
Learn by taking actions and
observing results and refining
hypothesis
Interact with humans in
a natural way

Taking the first two of these,
we find that many cognitive
systems require large collections
of unstructured data, presented in
a variety of formats and operated
on by a variety of algorithms. This
is quite different from traditional
rules-based systems, which accept
a limited number of inputs and
then execute a fixed set of steps.
Somewhat less exotic than fully
cognitive systems is the rapidly
growing collection of analytic
or big data systems that seek
insights from large collections of
data. Data scientists have become
an important presence in many
enterprises, and they deploy a
range of tools such as MongoDB,
Spark, Cloudant*, Couchbase and
others to derive business insights
from data. New applications can
usually get by using whatever
storage facilities are available,
but as these become missioncritical and grow in scale, storage
requirements specific to the
workloads begin to emerge. If
the applications are important
enough, and the benefits large

enough, enterprises seeking
competitive advantage
through data will adopt new
storage patterns.

New Storage
Technologies Step up

t

At the same time
that clouds are
changing the
ownership model
for storage,
cognitive
computing is
changing the
way applications
use data and the
storage services
that would
benefit them

14 // MARCH/APRIL 2018 ibmsystemsmag.com

Fortunately, a new set of
advanced storage technologies
that meet new needs for
performance, cost and function
have reached maturity
and are ready for use. For
performance and cost, there are
Flash-based solid-state storage
and phase-change memory;
and the non-volatile memory
express (NVMe), NVMe over
Fabric, Coherent Accelerator
Processor Interface (CAPI),
and zHyperLink attachments.
For cost and function, there is
software-defined storage (SDS),
including the software for object
stores, which are key to cloud
services. Finally, for function,
IBM has a new role of data
management through metadata,
which will be important for
well-run analytics and
cognitive systems.
Storage performance at the
media level has been highly
problematic for nearly 20 years.
Disk drives have been unchanged
in IO performance, measured
in IOs/Sec, as all other IT
technologies improved by orders
of magnitude. NAND Flash media
isn't a perfect fit for enterprise
applications, but with software
for redundancy and elimination
of delays for garbage collection,
it's now highly reliable. Flash is
faster than disk by up to 1,000x,
and is now denser: Flash SSDs
reach 15 TB in the same space as a
12 TB HDD. With the added effect
of hardware compression, Flash
is now cheaper than 15K and
10K RPM HDDs and dramatically
cheaper in cost per IO/sec. IBM
delivers Flash using form factor
SSDs as well as a highly optimized

2U Flash enclosure with new
models reaching 180 TB before
compression.
Faster storage media requires
faster interfaces. Network speeds
have improved steadily, but the
workhorse storage protocol, Small
Computer Systems Interface,
has become a performance
bottleneck for fast devices. New
attachment protocols offer much
more efficient data exchanges: For
x86 systems, there are NVMe and
NVMe over Fabric; for Power*,
it's the CAPI interface; and on
IBM z14*, it's zHyperLink.

SDS Leader
For cloud environments, the
need to create storage services on
commodity hardware has driven
investment in SDS. Multiple
types of storage services exist:
file, block or object storage.
A cloud service provider or a
modern enterprise administrator
can create service capacity by
launching additional software on
appropriate hardware.
IBM has been the leader in
SDS since its inception; the
IBM SAN Volume Controller
with IBM Spectrum Virtualize*
software is the industry-leading
SDS product that earns IBM its
No. 1 ranking (ibm.co/2y3yUNl).
SDS is also an enabler of the
hybrid cloud model. To achieve
easy mobility of data between
on-premises operations and a
cloud service, compatible storage
services spread across both is
required. The SDS model allows
enterprise and cloud operations
to share data exchange and
management interfaces,
making the composite operation
nearly seamless.
Within the SDS category,
object storage deserves a special
mention. The idea of object stores
has been around for decades, but
until hyperscale cloud providers
appeared, they had little use.


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Table of Contents for the Digital Edition of IBM Systems Magazine, Mainframe - March/April 2018

Table of Contents
Editor's Desk: Secure Sharing in the Cloud
Partner POV: Winds of Change: Now is the time for digital transformation on IBM Z
IT Today: Solutions and Support: 5 reasons IBM Z makes technical and financial sense for clients
Focus on Storage: New Revolution: Storage technology shifts to accommodate cloud and cognitive demands
Case Study: A Proof of Concept: ICU IT Services expands its market base by embracing Linux on IBM Z and IBM LinuxONE
Cover Story: Building on the Future: IBM Cloud Private with IBM Z helps clients reap the benefits of cloud
Feature: Securing the Cloud: New and established IBM offerings to meet enterprise data protection needs
TECH Showcase: The Clock's Ticking: IBM framework helps clients prepare for the EU's General Data Protection Regulation
Hot Topics: Go With the Flow: z/OS v2.3 Migration book is transformed to a z/OSMF workflow
Administrator: Problem Pointer: Runtime Diagnostics with z/OS V2.3 offers new ways to discover issues
Solutions: DMX Change Data Capture, Syncsort; Enterprise 3.0, Micro Focus
Stop Run: Reg Harbeck
Reference Point - Global Events, Education, Resources for Power Systems
2018 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - March/April 2018 - Intro
IBM Systems Magazine, Mainframe - March/April 2018 - Cover1
IBM Systems Magazine, Mainframe - March/April 2018 - Cover2
IBM Systems Magazine, Mainframe - March/April 2018 - 1
IBM Systems Magazine, Mainframe - March/April 2018 - Table of Contents
IBM Systems Magazine, Mainframe - March/April 2018 - 3
IBM Systems Magazine, Mainframe - March/April 2018 - Editor's Desk: Secure Sharing in the Cloud
IBM Systems Magazine, Mainframe - March/April 2018 - 5
IBM Systems Magazine, Mainframe - March/April 2018 - Partner POV: Winds of Change: Now is the time for digital transformation on IBM Z
IBM Systems Magazine, Mainframe - March/April 2018 - 7
IBM Systems Magazine, Mainframe - March/April 2018 - IT Today: Solutions and Support: 5 reasons IBM Z makes technical and financial sense for clients
IBM Systems Magazine, Mainframe - March/April 2018 - 9
IBM Systems Magazine, Mainframe - March/April 2018 - 10
IBM Systems Magazine, Mainframe - March/April 2018 - 11
IBM Systems Magazine, Mainframe - March/April 2018 - Focus on Storage: New Revolution: Storage technology shifts to accommodate cloud and cognitive demands
IBM Systems Magazine, Mainframe - March/April 2018 - 13
IBM Systems Magazine, Mainframe - March/April 2018 - 14
IBM Systems Magazine, Mainframe - March/April 2018 - 15
IBM Systems Magazine, Mainframe - March/April 2018 - Case Study: A Proof of Concept: ICU IT Services expands its market base by embracing Linux on IBM Z and IBM LinuxONE
IBM Systems Magazine, Mainframe - March/April 2018 - 17
IBM Systems Magazine, Mainframe - March/April 2018 - 18
IBM Systems Magazine, Mainframe - March/April 2018 - 19
IBM Systems Magazine, Mainframe - March/April 2018 - Cover Story: Building on the Future: IBM Cloud Private with IBM Z helps clients reap the benefits of cloud
IBM Systems Magazine, Mainframe - March/April 2018 - 21
IBM Systems Magazine, Mainframe - March/April 2018 - 22
IBM Systems Magazine, Mainframe - March/April 2018 - 23
IBM Systems Magazine, Mainframe - March/April 2018 - 24
IBM Systems Magazine, Mainframe - March/April 2018 - 25
IBM Systems Magazine, Mainframe - March/April 2018 - Feature: Securing the Cloud: New and established IBM offerings to meet enterprise data protection needs
IBM Systems Magazine, Mainframe - March/April 2018 - 27
IBM Systems Magazine, Mainframe - March/April 2018 - 28
IBM Systems Magazine, Mainframe - March/April 2018 - 29
IBM Systems Magazine, Mainframe - March/April 2018 - 30
IBM Systems Magazine, Mainframe - March/April 2018 - 31
IBM Systems Magazine, Mainframe - March/April 2018 - 32
IBM Systems Magazine, Mainframe - March/April 2018 - TECH Showcase: The Clock's Ticking: IBM framework helps clients prepare for the EU's General Data Protection Regulation
IBM Systems Magazine, Mainframe - March/April 2018 - 34
IBM Systems Magazine, Mainframe - March/April 2018 - 35
IBM Systems Magazine, Mainframe - March/April 2018 - 36
IBM Systems Magazine, Mainframe - March/April 2018 - 37
IBM Systems Magazine, Mainframe - March/April 2018 - 38
IBM Systems Magazine, Mainframe - March/April 2018 - 39
IBM Systems Magazine, Mainframe - March/April 2018 - 40
IBM Systems Magazine, Mainframe - March/April 2018 - 41
IBM Systems Magazine, Mainframe - March/April 2018 - 42
IBM Systems Magazine, Mainframe - March/April 2018 - 43
IBM Systems Magazine, Mainframe - March/April 2018 - Hot Topics: Go With the Flow: z/OS v2.3 Migration book is transformed to a z/OSMF workflow
IBM Systems Magazine, Mainframe - March/April 2018 - 45
IBM Systems Magazine, Mainframe - March/April 2018 - 46
IBM Systems Magazine, Mainframe - March/April 2018 - 47
IBM Systems Magazine, Mainframe - March/April 2018 - 48
IBM Systems Magazine, Mainframe - March/April 2018 - 49
IBM Systems Magazine, Mainframe - March/April 2018 - 50
IBM Systems Magazine, Mainframe - March/April 2018 - Administrator: Problem Pointer: Runtime Diagnostics with z/OS V2.3 offers new ways to discover issues
IBM Systems Magazine, Mainframe - March/April 2018 - 52
IBM Systems Magazine, Mainframe - March/April 2018 - 53
IBM Systems Magazine, Mainframe - March/April 2018 - 54
IBM Systems Magazine, Mainframe - March/April 2018 - Solutions: DMX Change Data Capture, Syncsort; Enterprise 3.0, Micro Focus
IBM Systems Magazine, Mainframe - March/April 2018 - Stop Run: Reg Harbeck
IBM Systems Magazine, Mainframe - March/April 2018 - Cover3
IBM Systems Magazine, Mainframe - March/April 2018 - Cover4
IBM Systems Magazine, Mainframe - March/April 2018 - Reference Point - Global Events, Education, Resources for Power Systems
IBM Systems Magazine, Mainframe - March/April 2018 - 2018 Mainframe Solutions Edition Product Index
IBM Systems Magazine, Mainframe - March/April 2018 - SE2
IBM Systems Magazine, Mainframe - March/April 2018 - SE3
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