IBM Systems magazine, Mainframe - July/August 2019 - 50

TECHBITS

Disposable Data Can Pose Legal
Liabilities and Security Risks

I

n this digital age, more data is
being created than ever before.
Recent estimates from IDC
place the number at 175 zettabytes
c:"dà Ã?;?BNÃ4%Ã$ɯÉÇ&%ÃÄÃC>lÃ
compound annual growth rate and
%ÃÄ$ÉÄÈ1ÃFlÃÉ$Ã&Ä Ã)$#V%Ã
É%&Ä&É%Ã$!Ã?;>ENÃ4!ÈÄ1QÃ&V%Ã
pegged at 33 ZB, where a zettabyte
is one sextillion (1021) bytes (bit.
ly/2TN2hjj).
This vast amount of data is
making it harder for organizations to gain the insights they
need to succeed. Data is not only
massive, but complex, crossing
many formats and platforms. It
can be structured, unstructured,
distributed, on-premises, mobile,

stored on IBM Z*, stored in the
cloud and more.

Data Comes With Risks
Many data analysts believe that
all data contributes to valuable insights. While this is true, data also
comes with costs and risks. The
following will be a brief discussion
of problems we encountered when
analyzing data across a sample
of internal IBM z/OS* mainframe
LPARs over a period of four years.
Like any large corporation, IBM
has a comprehensive data-retention
policy. It divides data into three
categories: essential, reference and
disposable. Essential data must
%Ä&%1Ã !&Ã! 1Ã)"-V%ÃÆ'% É%%Ã

John Shuman is an executive IT architect and chief architect with
IBM Global Technology Services.
Patrick Stanard is a mainframe integration architect for
IBM Global Technology Services.
50 | JULY/AUGUST 2019 IBMSYSTEMSMAG.COM

operations, but also any corporate
legal requirements. This could be
anything from contract documents
to data held to meet U.S. Internal Revenue Service regulations,
ongoing litigation or the laws of
countries where IBM does business.
Document retention orders (DROs)
are issued by IBM Legal to suspend
the destruction of information and
documents. Essential data must be
retrievable at any time within the
mandated retention period.
2ÉÉ$É ÇÉÃ !$Ä&! Ã%ÃÈÉ® ÉÈÃ
as necessary by employees or departments to satisfy business obligations. In practice, it means anything
Ä ÃÉ"!1ÉÉî È%Ã'%É'NÃ)ÈÉÄ1QÃ
Ä 1ÃÈÄ&ÄÃ&Ä&ÃÄ% V&ÃÆÉÉ Ã'%ÉÈÃ Ã
over two years is reviewed regularly
for continuous business needs.
! 1ÃÈÄ&ÄÃ&Ä&Ã% V&ÃÇÄ&É!$ ÉÈÃ
as essential or reference is considered disposable. Application
owners must be aware of DROs
and consult essential information
categories before moving forward
with disposal.

Identifying Disposable Data
We applied these three categories
to a sample size of 40 z/OS LPARs
$'  ÃDBlÃ)"-Ã &É$ ÄÃ%1%&É%Ã
Ä ÈÃ?BlÃÇ!É$ÇÄÃ)"-ÃÇÉ &%Ã Ã
&ÉÃ %'$Ä ÇÉÃÄ Èî Ä ÇÉÃ È'%tries. A toolbox of Restructured
Extended Executor language and
Statistical Analysis System programs were written to cull through
data from IDCAMS DCOLLECT and
various tape management systems.
The primary focus was on the
last date that a data set had been
opened for read or write activity.
There were predictable as well
Ä%Ã%'$"$% î È %NÃ&$%&QÃ&V%Ã
imperative that data on disk subsystems be catalogued, and if data
is being shared across LPARs, the
catalogs must also be shared. Applications use the catalog to manage disk data, and something not
in the catalog is usually considered
to be suspect. DCOLLECT ignores


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IBM Systems magazine, Mainframe - July/August 2019

Table of Contents for the Digital Edition of IBM Systems magazine, Mainframe - July/August 2019

Table of Contents
Editor's Desk: Resiliency is key in an 'always-on' world
Currents: Alphabet soup of compliance
Currents: X-Force Red discovers sign-in kiosk vulnerabilities
Currents: IBM Z hardware and software maximize resiliency
Currents: A robot walks into a bar
Currents: How resilient is your IBM Z system of record?
Currents: Solutions
Partner POV: Redirecting select mainframe workloads to the cloud could create new opportunities
Cover Story: Fail Safe: Puerto Rico's disaster recovery planning is a blueprint for your data protection
Feature 1: Elevating Hybrid Cloud: IBM Z strengthens security, resiliency and open development for cloud infrastructure
Champions Showcase: The 2019 IBM Z Champions are committed to communicating the value of the platform
Hot Topics: z/OS Cloud Broker leverages common cloud platforms to enable z/OS resource consumption
Techbits: Disposable data can pose legal liabilities and security risks
Techbits: Raising the bar on IBM Z resiliency with GDPS
Techbits: Get real-time insight and data security with Open Data Analytics for z/OS
Techbits: Ask the expert: z/OS data set encryption
Beyond the Box: z/VM Senior Software Engineer Brian Wade finds similarities between his job and his life as a pilot
Reference Point - Global Events, Education, Resources for Power Systems
2019 Mainframe Solutions Edition Product Index
IBM Systems magazine, Mainframe - July/August 2019 - Intro
IBM Systems magazine, Mainframe - July/August 2019 - Cover1
IBM Systems magazine, Mainframe - July/August 2019 - Cover2
IBM Systems magazine, Mainframe - July/August 2019 - 1
IBM Systems magazine, Mainframe - July/August 2019 - 2
IBM Systems magazine, Mainframe - July/August 2019 - 3
IBM Systems magazine, Mainframe - July/August 2019 - Table of Contents
IBM Systems magazine, Mainframe - July/August 2019 - 5
IBM Systems magazine, Mainframe - July/August 2019 - Editor's Desk: Resiliency is key in an 'always-on' world
IBM Systems magazine, Mainframe - July/August 2019 - 7
IBM Systems magazine, Mainframe - July/August 2019 - Currents: Alphabet soup of compliance
IBM Systems magazine, Mainframe - July/August 2019 - Currents: X-Force Red discovers sign-in kiosk vulnerabilities
IBM Systems magazine, Mainframe - July/August 2019 - Currents: IBM Z hardware and software maximize resiliency
IBM Systems magazine, Mainframe - July/August 2019 - 11
IBM Systems magazine, Mainframe - July/August 2019 - Currents: A robot walks into a bar
IBM Systems magazine, Mainframe - July/August 2019 - 13
IBM Systems magazine, Mainframe - July/August 2019 - Currents: How resilient is your IBM Z system of record?
IBM Systems magazine, Mainframe - July/August 2019 - 15
IBM Systems magazine, Mainframe - July/August 2019 - Currents: Solutions
IBM Systems magazine, Mainframe - July/August 2019 - 17
IBM Systems magazine, Mainframe - July/August 2019 - Partner POV: Redirecting select mainframe workloads to the cloud could create new opportunities
IBM Systems magazine, Mainframe - July/August 2019 - 19
IBM Systems magazine, Mainframe - July/August 2019 - Cover Story: Fail Safe: Puerto Rico's disaster recovery planning is a blueprint for your data protection
IBM Systems magazine, Mainframe - July/August 2019 - 21
IBM Systems magazine, Mainframe - July/August 2019 - 22
IBM Systems magazine, Mainframe - July/August 2019 - 23
IBM Systems magazine, Mainframe - July/August 2019 - 24
IBM Systems magazine, Mainframe - July/August 2019 - 25
IBM Systems magazine, Mainframe - July/August 2019 - 26
IBM Systems magazine, Mainframe - July/August 2019 - 27
IBM Systems magazine, Mainframe - July/August 2019 - Feature 1: Elevating Hybrid Cloud: IBM Z strengthens security, resiliency and open development for cloud infrastructure
IBM Systems magazine, Mainframe - July/August 2019 - 29
IBM Systems magazine, Mainframe - July/August 2019 - 30
IBM Systems magazine, Mainframe - July/August 2019 - 31
IBM Systems magazine, Mainframe - July/August 2019 - 32
IBM Systems magazine, Mainframe - July/August 2019 - 33
IBM Systems magazine, Mainframe - July/August 2019 - 34
IBM Systems magazine, Mainframe - July/August 2019 - 35
IBM Systems magazine, Mainframe - July/August 2019 - 36
IBM Systems magazine, Mainframe - July/August 2019 - 37
IBM Systems magazine, Mainframe - July/August 2019 - Champions Showcase: The 2019 IBM Z Champions are committed to communicating the value of the platform
IBM Systems magazine, Mainframe - July/August 2019 - 39
IBM Systems magazine, Mainframe - July/August 2019 - 40
IBM Systems magazine, Mainframe - July/August 2019 - 41
IBM Systems magazine, Mainframe - July/August 2019 - 42
IBM Systems magazine, Mainframe - July/August 2019 - 43
IBM Systems magazine, Mainframe - July/August 2019 - 44
IBM Systems magazine, Mainframe - July/August 2019 - 45
IBM Systems magazine, Mainframe - July/August 2019 - Hot Topics: z/OS Cloud Broker leverages common cloud platforms to enable z/OS resource consumption
IBM Systems magazine, Mainframe - July/August 2019 - 47
IBM Systems magazine, Mainframe - July/August 2019 - 48
IBM Systems magazine, Mainframe - July/August 2019 - 49
IBM Systems magazine, Mainframe - July/August 2019 - Techbits: Disposable data can pose legal liabilities and security risks
IBM Systems magazine, Mainframe - July/August 2019 - Techbits: Raising the bar on IBM Z resiliency with GDPS
IBM Systems magazine, Mainframe - July/August 2019 - 52
IBM Systems magazine, Mainframe - July/August 2019 - Techbits: Get real-time insight and data security with Open Data Analytics for z/OS
IBM Systems magazine, Mainframe - July/August 2019 - Techbits: Ask the expert: z/OS data set encryption
IBM Systems magazine, Mainframe - July/August 2019 - 55
IBM Systems magazine, Mainframe - July/August 2019 - Beyond the Box: z/VM Senior Software Engineer Brian Wade finds similarities between his job and his life as a pilot
IBM Systems magazine, Mainframe - July/August 2019 - Cover3
IBM Systems magazine, Mainframe - July/August 2019 - Cover4
IBM Systems magazine, Mainframe - July/August 2019 - Reference Point - Global Events, Education, Resources for Power Systems
IBM Systems magazine, Mainframe - July/August 2019 - 2019 Mainframe Solutions Edition Product Index
IBM Systems magazine, Mainframe - July/August 2019 - SE2
IBM Systems magazine, Mainframe - July/August 2019 - SE3
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