IBM Systems Magazine, Power Systems - February 2018 - 28

Payroll involves three applications: gathering the hours each
employee worked, performing
some business logic such as
calculating tax withholdings, and
then printing checks or sending
funds electronically via direct
deposit. It does no good to only
recover one or two of those applications; you need all three to run
payroll.
For each business process, prioritize its importance after a disaster.
Be pragmatic: Use categories like
gold, silver and bronze to rank
each and assign a desired RTO for
each category (e.g., gold business
processes need to be operational in
four hours, silver in 48 hours and
bronze within two weeks).
Identify the applications and
data required to support each
business process and the needed
server, storage and network
infrastructure. Can these run in a
cloud? Do you have what you need
at your designated DR facility?
IBM conference attendees in
1983 documented a standard
set of DR levels. The business
continuity tiers were ranked from
"least expensive, longest time
to recover" to "most expensive,
fastest recovery," and have stood
the test of time (see Figure 1,
above). Over three decades later,
these are still the standards used
for BC/DR planning:

Figure 1: Disaster Recovery Levels

BC Tier 2: Tapes in a hot site
Similar to Tier 1, but with
the offline media shipped to
the designated recovery location. A "hot site" implies
servers, storage and network
equipment are already in place
to perform recovery from these
backup tapes.

An NTT
Communications
survey of
organizations
found that

50%
don't have a
documented
DR plan

BC Tier 1: Restore from offline
media, most often tape
Typically, backup tapes are
created and periodically shipped
to an offsite storage facility.
Depending on how often this
happens, the organization must
be prepared to accept several days
to weeks of data loss. Recovery
will require someone to pick up
these tapes and take them to the
recovery location.
28 // FEBRUARY 2018 ibmsystemsmag.com

BC Tier 3: Electronic vaulting
Rather than shipping physical media, data is transmitted
electronically and stored on tapes
or other media at the recovery
location. This eliminates many of
the problems associated with boxing up backup tapes, providing
them to couriers and having them
received at the recovery site.
BC Tier 4: Point-in-time copies
Flash and disk storage data can
be copied at specific points in
time (e.g., every four hours) and
electronically sent to the recovery
facility. When a disaster occurs,
the point-in-time copies may
need to be cleaned up for partial
or incomplete transactions that
were in play at the time the copies were made.

BC Tier 5: Application/database
integration
For some business processes,
transactional integrity is critical. By
integrating with specific application or database capabilities, BC
Tier 5 provides for little or no data
loss. This can be accomplished by
sending transactions to secondary
copies of the databases at the recovery locations. This is sometimes
called log shipping or database
shadowing. Unfortunately, this
only addresses the subset of data
and applications that support this,
leaving all unstructured data to be
recovered some other way.
BC Tier 6: Real-time continuous
data replication
Often referred to as mirroring, BC
Tier 6 eliminates dependencies on
application or database capabilities and covers all data, both
structured and unstructured. Synchronous replication means that
the data at the recovery location is
identical to the data at the primary
location, with an RPO of zero.
Asynchronous means the data at
the recovery location may be a few
seconds or minutes behind.


http://www.ibmsystemsmag.com

Table of Contents for the Digital Edition of IBM Systems Magazine, Power Systems - February 2018

Table of Contents
Editor's Desk: From Here to AI
IBM Perspective: Hitting the Infrastructure Wall
Techbits: Breaking the Tape (Record), Plastic Fantastic, A Tale of Five Cities
Trends: A Human-Centric Approach: IBM Design Thinking leads to an elevated user experience
Partner POV: What I've Learned: 5 lessons from 25 years of IBM i experience
Case Study: It's in the Bag: How Imperial Bag & Paper Co. has eased the growing pains associated with increasing its market share
Cover Story: Optimize Your AI Journey: IBM Power hardware and software streamline deep learning initiatives
Feature 1: Build a Better AI Workflow: Start with a strong foundation
Feature 2: A Plan in Place: Determine which of the 7 levels of buisness continuity is right for you
TECH Showcase: Taking Action on Modernization: Updating computing environments is a manageable task that provides long-term benefits
R&D: Testing Healthcare: IBM Research and partners are focusing on nanoscale cancer testing that could save lives
Solutions: NowYouSign, Power i4 Solutions; Managed Resilience Service, Vision Solutions Inc.
Snapshot: Kevin Fugate
Reference Point - Global Events, Education, Resources for Power Systems
2018 Power Systems Solution Edition Index
IBM Systems Magazine, Power Systems - February 2018 - Intro
IBM Systems Magazine, Power Systems - February 2018 - Cover1
IBM Systems Magazine, Power Systems - February 2018 - Cover2
IBM Systems Magazine, Power Systems - February 2018 - 1
IBM Systems Magazine, Power Systems - February 2018 - Table of Contents
IBM Systems Magazine, Power Systems - February 2018 - 3
IBM Systems Magazine, Power Systems - February 2018 - Editor's Desk: From Here to AI
IBM Systems Magazine, Power Systems - February 2018 - CT1
IBM Systems Magazine, Power Systems - February 2018 - CT2
IBM Systems Magazine, Power Systems - February 2018 - IBM Perspective: Hitting the Infrastructure Wall
IBM Systems Magazine, Power Systems - February 2018 - Techbits: Breaking the Tape (Record), Plastic Fantastic, A Tale of Five Cities
IBM Systems Magazine, Power Systems - February 2018 - 7
IBM Systems Magazine, Power Systems - February 2018 - 8
IBM Systems Magazine, Power Systems - February 2018 - Trends: A Human-Centric Approach: IBM Design Thinking leads to an elevated user experience
IBM Systems Magazine, Power Systems - February 2018 - Partner POV: What I've Learned: 5 lessons from 25 years of IBM i experience
IBM Systems Magazine, Power Systems - February 2018 - 11
IBM Systems Magazine, Power Systems - February 2018 - Case Study: It's in the Bag: How Imperial Bag & Paper Co. has eased the growing pains associated with increasing its market share
IBM Systems Magazine, Power Systems - February 2018 - 13
IBM Systems Magazine, Power Systems - February 2018 - 14
IBM Systems Magazine, Power Systems - February 2018 - 15
IBM Systems Magazine, Power Systems - February 2018 - 16
IBM Systems Magazine, Power Systems - February 2018 - 17
IBM Systems Magazine, Power Systems - February 2018 - Cover Story: Optimize Your AI Journey: IBM Power hardware and software streamline deep learning initiatives
IBM Systems Magazine, Power Systems - February 2018 - 19
IBM Systems Magazine, Power Systems - February 2018 - 20
IBM Systems Magazine, Power Systems - February 2018 - 21
IBM Systems Magazine, Power Systems - February 2018 - 22
IBM Systems Magazine, Power Systems - February 2018 - 23
IBM Systems Magazine, Power Systems - February 2018 - Feature 1: Build a Better AI Workflow: Start with a strong foundation
IBM Systems Magazine, Power Systems - February 2018 - 25
IBM Systems Magazine, Power Systems - February 2018 - Feature 2: A Plan in Place: Determine which of the 7 levels of buisness continuity is right for you
IBM Systems Magazine, Power Systems - February 2018 - 27
IBM Systems Magazine, Power Systems - February 2018 - 28
IBM Systems Magazine, Power Systems - February 2018 - 29
IBM Systems Magazine, Power Systems - February 2018 - 30
IBM Systems Magazine, Power Systems - February 2018 - 31
IBM Systems Magazine, Power Systems - February 2018 - 32
IBM Systems Magazine, Power Systems - February 2018 - TECH Showcase: Taking Action on Modernization: Updating computing environments is a manageable task that provides long-term benefits
IBM Systems Magazine, Power Systems - February 2018 - 34
IBM Systems Magazine, Power Systems - February 2018 - 35
IBM Systems Magazine, Power Systems - February 2018 - 36
IBM Systems Magazine, Power Systems - February 2018 - 37
IBM Systems Magazine, Power Systems - February 2018 - 38
IBM Systems Magazine, Power Systems - February 2018 - 39
IBM Systems Magazine, Power Systems - February 2018 - 40
IBM Systems Magazine, Power Systems - February 2018 - 41
IBM Systems Magazine, Power Systems - February 2018 - 42
IBM Systems Magazine, Power Systems - February 2018 - R&D: Testing Healthcare: IBM Research and partners are focusing on nanoscale cancer testing that could save lives
IBM Systems Magazine, Power Systems - February 2018 - 44
IBM Systems Magazine, Power Systems - February 2018 - 45
IBM Systems Magazine, Power Systems - February 2018 - 46
IBM Systems Magazine, Power Systems - February 2018 - Solutions: NowYouSign, Power i4 Solutions; Managed Resilience Service, Vision Solutions Inc.
IBM Systems Magazine, Power Systems - February 2018 - Snapshot: Kevin Fugate
IBM Systems Magazine, Power Systems - February 2018 - Cover3
IBM Systems Magazine, Power Systems - February 2018 - Cover4
IBM Systems Magazine, Power Systems - February 2018 - Reference Point - Global Events, Education, Resources for Power Systems
IBM Systems Magazine, Power Systems - February 2018 - 2018 Power Systems Solution Edition Index
IBM Systems Magazine, Power Systems - February 2018 - SE2
IBM Systems Magazine, Power Systems - February 2018 - SE3
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http://www.ibmsystemsmagpowersystemsibmidigital.com/nxtbooks/ibmsystemsmag/ibmsystems_power_200905
http://www.ibmsystemsmagpowersystemsaixdigital.com/nxtbooks/mspcomm/ibmsystems_power-aix_20090405
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http://www.nxtbook.com/nxtbooks/ibmsystemsmag/ibmsystems_power_200903
http://www.nxtbook.com/nxtbooks/mspcomm/ibmsystems_power-aix_20090203
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http://www.nxtbook.com/nxtbooks/mspcomm/ibmsystems_power_200901
http://www.nxtbookMEDIA.com