SAP_HANA_Dr_Berg_Sapphire_2013

Report
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration
Four BW to HANA Migration Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
Introduction
• HANA
is an in memory solution
that can take large volumes of
data, compress it, and store it
for extremely fast access by
thousands of users.
• It
is the ‘engine’ of the next
generation of computer systems
for analytics and transaction
processing
SAP HANA, as of 2013, can be used as the in-memory database
for BusinessSuite, BW and SAP’s BusinessOne Solution
An Alternative SAP BW on HANA Sizing Tool
SAP has released a new ABAP based tool that generates a report significantly
better sizing fro SAP BW than using just the QuickSizer above. This program
takes into consideration existing database compression, different table types
and also include the effects of non-active data on the HANA system.
The higher precision
you run the estimate at
the longer the program
is going to run.
With 14 parallel
processors and 8Tb
data warehouse, it is
not unusual to see 4575 minutes run time.
To increase speed,
you can also
suppress analysis
tables with less
than 1 MB size.
SAP BW on HANA Sizing Tool
Since timeouts are common when
running the sizing program, you
can temporarily change the
parameter in rdisp/max_wprun_time
to 0 in BW transaction RZ11.
Finally, you estimate the growth for
the system as a percentage, or as
absolute growth.
After you have downloaded and installed the program, and-selected the parameters
above, you can go to SE38 and run SDF/HANA_BW_SIZING as a background job.
The output is stored in the file you specified and the file can now be email emailed
to hardware vendors for sizing input and hardware selection.
This program is attached to SAP Note: 1736976 on SAP Marketplace
A T-Shirt Model for Sizing HANA on BW
A T-shirt model is a quick
way to get some basic ideas
on what a system may look
like.
While very inaccurate for
sizing, it provides basic
information for those just
staring considering SAP
HANA
Data Compress
ion (from)
Working
Memory
Processors
SAS/SSD
(for data)
Replication
Speed (per
hour)
Extra
Large
(XXL)
7000–100,000
GB
3072 GB
12+ Intel
E7 2.4 Ghz
10+ TB
20+ GB
Very
Large
(XL)
3500–7000GB
2048 GB
8+ Intel E7
2.4 Ghz
5 – 10 TB
20+ GB
Large (L)
2000–3500GB
1024GB
4 x Intel
E7 2.4 Ghz
4 - 5 TB
5–20GB
Medium
(M)
1250–
2000GB
512GB
4 x Intel
E7 2.0+
Ghz
2048GB
5–20 GB
Small (S)
500–
1250GB
256GB
2 x Intel
E7 2.0+
Ghz
1024GB
5GB
Extra
Small
(XS)
256–
500GB
128GB
2 x Intel
E7 2.0+
Ghz
1024GB
5GB
to 20+ TB
(multi node)
(multi node)
The number of processors are largely driven by the number of users and usage
patterns. Serious consideration should be made before buying hardware.
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration
Four BW to HANA Migration Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
Hardware Options for HANA
There are currently 7 different
certified HANA hardware vendors
with 13 different products.
Memory
Hardware
128GB
Cisco C260
X
Cisco C460
256GB
X
X
X
X+
X
Dell R910
X
X
X
Hitachi CB 2000
X
X
X
X
X
X
X
NEC Express 5800
Fujitsu RX 600 S5
X
Fujitsu RX 900 S2
HP DL 580 G7
X
X
X
HP DL 980 G7
X+
X+
X
X
X
X+
HP BL 680
X
X
X
IBM x3690 X5
X
X
X
X
X
IBM x3950 X5
1024GB
X
Cisco B440
Some boxes can be used as single nodes
with others are intended for scale-out
solutions for large multi-node systems
512GB
X+
A HANA Hardware Example
In this box, we are
see the inside of an
IBM x3950 HANA
system.
The system
basically consists
of memory, disk,
processors and
network cards
The hardware vendor will install, connect and to a health check on your system
before handing it over to you. A 3-year service plan is also normally required.
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration
Four BW to HANA Migration Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
Pre-Steps – Analyze BW Readiness
SAP has a checklist tool for
SAP NetWeaver BW powered by
HANA (thanks Marc Bernard).
In this tool, SAP provided
automatic check programs for
both the 3.5 version and the 7.x
version of BW. These are found
in SAP Note: 1729988.
In version 2.x of this tool,
hundreds of checks are done
automatically in the BW system.
This includes platform checks
on database and application
There are even basis checks for support packs, ABAP/JAVA
and system information.
stacks, Unicode, BW releases, and add-ons to your system.
Pre-Steps – Analyze BW Readiness
The idea of the checklist tool
from SAP is that you run it
several times throughout the
project.
Once before you start, then
periodically as you resolve
issues and upgrade
requirements, and then finally
when the system has been
migrated to HANA.
The checklist tool also has specific checks for the HANA system that can help
you identify any issues before turning over the system to end users..
New ABAP Check Program
New ABAP Check Program
New ABAP Check Program
New ABAP Check Program
New ABAP Check Program
Pre-Steps – Cleaning up your BW System
You can save significant amounts of work by doing a
cleanup effort before you start your HANA migration or
a BW upgrade project.
For example, a international company had a BW system with over 108
TB, with only 36TB in the production box and the remaining data on
their Near-Line Storage (NLS) solution.
This cleaned BW system saved them potentially millions of dollars in
hardware and HANA licensing costs.
It is not unusual to reduce a BW system size by
20-30% during a clean up effort.
12 Pre-Steps – Cleaning up your BW System
1. Clean the Persistent Staging Area (PSA) for data already loaded to DSOs
2. Delete the Aggregates (summary tables). They will not be needed again.
3. Compress the E and F tables in all InfoCubes. This will make InfoCubes
much smaller.
4. Remove data from the statistical cubes (they starts with the technical
name of 0CTC_xxx). These contain performance information for the BW
system running on the relational database. You can do this using the
transaction RSDDSTAT or the program RSDDSTAT_DATA_DELETE to
help you.
5. Look at log files, bookmarks and unused BEx queries and templates
(transaction RSZDELETE).
6. Remove as much as possible of the DTP temporary storage, DTP error
logs, and temporary database objects. Help and programs to do this
is found in SAP Notes 1139396 and 1106393.
12 Pre-Steps – Cleaning up your BW System
7) For write-optimized DSOs that push data to reportable
DSOs (LSA approach), remove data in the writeoptimized DSOs. It is already available in higher level
objects.
8) Migrate old data to Near-Line Storage (NLS) on a small server.
This will still provide access to the data for the few users who
infrequently need to see this old data. You will also be able to query
it when BW is on HANA, but it does not need to be in-memory.
7) Remove data in unused DSOs, InfoCubes and files used for staging
in the BW system. This include possible reorganization of
masterdata text and attributes using process type in RSPC
12 Pre-Steps – Cleaning up your BW System
10) You may also want to clean up background information stored in the table
RSBATCHDATA. This table can get very big if not managed. You should
also consider archiving any IDocs and clean the tRFC queues. All of this
will reduce size of the HANA system and help you fit the system tables on
the master node.
11) In SAP Note 706478, SAP provides some ideas on how to keep the basis
tables from growing too fast too fast in the future, and if you are on Service
Pack 23 on BW 7.0, or higher, you can also delete unwanted masterdata
directly (see SAP Note: 1370848).
12) Finally, you can use the program RSDDCVER_DIM_UNUSED to delete any
unused dimension entries in your InfoCubes to reduce the overall
system size.
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration
Four BW to HANA Migration Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
Four Options for Migrating BW to HANA
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There are basically 4 different
approaches to migrating your BW
system to SAP HANA. Each are slightly
different. They may be summarized as:
1.
2.
3.
4.
Standard BW to HANA migration without Optimization
BW to HANA migration with Optimization
BW to HANA migration as a Re-implementation
Migrate a Copy of BW to HANA
A major decision before you start is to determine which of these options
your want to pursue. We will now take a quick look at each of them
1. Standard BW to HANA migration without Optimization
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In this approach you treat your BW move to HANA as a
database migration project.
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This means that you start with the BW system, complete the cleanup and
preparations outlined above and migrate the database over to SAP HANA, but leave
the application logic and data models the same.
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After the migration you will have your database system as HANA, but there are no
model changes to your system and there will be no impact to your queries, link to
NLS, interfaces or data loads, except for substantially faster performance and some
internal changes how HANA processes at the database level (i.e. data activation and
compression).
Functionally, you have the same system and this
approach is therefore the fastest and most common.
2. BW to HANA migration with Optimization
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In this approach the migration also involve the optimization of
data structures to take advantage of the new capabilities in HANA.
This may include HANA optimized Infocubes and DSOs, and ‘HANA
hints’ on data transformations to make lookups go faster.
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This migration approach is a technical and functional upgrade at the same time.
While the impact is minimal, significant additional performance in data loads, and
query performance can be achieved.
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For very large BW systems, this approach can be very time consuming and require
more testing. To reduce this, you can limit the optimization to slow performing
areas that need this extra boost, or do the standard upgrade first and then optimize
as part of future development efforts, or when enhancing InfoCubes and DSOs.
How much additional optimization effort you are willing to undertake depends
on the resources available and how fast you have to complete the migration.
3. BW to HANA migration as a Re-implementation
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Some organizations have decided to take the BW to HANA migration as a reimplementation approach to also clean up old designs and retire lo longer used
InfoCubes, InfoObjects, DTPs, reports, queries and other elements.
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The steps involve setting up a new BW system on HANA parallel to the current BW
system running on a relational database. Then, for key areas, the InfoCubes and
DSOs are transported to the HANA box and the data loads are switched over to the
new system as part of smaller projects.
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Meanwhile, other InfoCubes and DSOs are running on the old BW relational
database based system. Basically you are running two BW systems at the same
time, without duplicating the loads to InfoProviders in both systems.
While more costly, this approach allows you to keep the old system around
and minimize risks of the HANA migration. The outage required is also
minimal and can be done over a weekend functional area by functional area.
4. Migrate a Copy of BW to HANA
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This alternative approach can be used by organizations with very low risk tolerance
and those who have lots of time to migrate BW to HANA.
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It involves copying the production BW system, applying notes or upgrades required.
Then reconciling the BW and the new BW on HANA system from a functional
standpoint. (interfaces, openhubs, reports, analytics, security, and data)
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When the tests are done, the process chains are run and the data is reconciled again.
To do this you need to plan carefully and run duplicated process chains to avoid
impacts to the ERP system. It requires load programs to load the data to both the BW
and the HANA system without impacting delta loads. But, it can be done.
After testing, you can switch the users over to the
new BW HANA box and de-commission the old BW.
Summary of BW to HANA Migration Options
Approach
Effort
Risk
Benefits
Most
Common
Standard BW to HANA
migration without Optimization
BW to HANA migration with
Optimization
BW to HANA migration as a
Re-implementation
Migrate a Copy of BW to HANA
(no optimization)
For many organization a migration of their BW systems to
HANA (technical migration), followed by a later functional
optimization is the most common approach (so far).
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration
Four BW to HANA Migration Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
Staffing a HANA Migration Project – Small Team
System Profile
Raw data size:
Complexity:
DataStores:
InfoCubes:
Queries:
Area
2.7 TB
Medium
87
63
409
Duration:
14 weeks
Environments: 4+1
Risk aversion: Medium
Other usage:
IP
Core
team
Test
team
Role
Staff area Jun
Company
50%
Company
75%
Consultant 100%
Consultant 100%
Consultant 100%
Project manager
BW Basis Support
HANA Basis Support
HANA Optimization developer
HANA Test & resolution lead
Functional Tester - Finance & COPA
Business
Functional Tester - Sales and Distribution Business
Functional Tester - MFG & Sourcing
Business
Jul
Aug
Sep
50%
75%
100%
100%
100%
25%
25%
25%
50%
100%
100%
100%
100%
50%
50%
50%
50%
75%
75%
50%
50%
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This assumes that the test team is dedicated for 3 weeks
during the migration of QA and Prod environments
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The test team from the business is already experienced
users of the BW system and need minimal training
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HANA Optimization of InfoCubes and DSOs are currently
for SD only for this organization.
This organization is using BWA and will be
retiring it as part of the HANA migration
Staffing a HANA Migration Project – Medium Team
System Profile
Raw data size: 5.6 TB
Complexity:
Medium
DataStores:
439
InfoCubes:
603
Queries:
1,300+
Area
Role
Project manager
Technical project manager
Core
Project Advisor
team
BW / HANA Basis Support
HANA Basis Support
BW Technical test lead
Test Team:
Finance
Functional Tester - Finance
HANA Test & resolution lead
Test Team:
SD & Commissions Functional Tester - Sales & Distribution
BW Technical tester
Test Team:
Other Areas
Functional Tester - Other areas
Staff area Jan
Company
25%
Consultant 100%
Consultant 20%
Company
75%
Consultant 100%
Company
Business
Consultant
Business
Company
Business
Feb
Mar
Apr
May
25% 25% 25% 25%
100% 100% 100% 100%
20% 20% 20% 20%
100% 100% 100% 75%
100% 100% 100%
75% 100% 100%
50% 50%
75% 100% 100%
50% 50%
75% 100% 100%
50% 50%
(incl. BOBJ)
Duration:
18 weeks
Environments: 4
Risk aversion: HIGH
Other usage:
None
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This assumes testing of core queries in BEx and
WebIntelligence is done by the business
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The data reconciliation and process chain testing is
done by dedicated resources in each team.

This team must be staffed with experienced resources.
HANA training for team members and hardware installs
must be in place prior to project start.
Staffing a HANA Migration Project – Very Large Team
System Profile
Raw data size: 38TB
Complexity:
High
DataStores:
1,300+
InfoCubes:
1,720+
Queries:
2,200+
Duration:
5 mos
Environments: 4
Risk aversion: HIGH
Other usage:
APO, IP,
BPC
This assumes minimal
additional functional
optimization
Area
Role
Project manager
Technical project manager
BW Basis Support
Core
HANA Basis Support
team
Project Advisor
HANA Optimization developer
Support team Representative
BW Technical test lead
Test Team:
HANA Test & resolution lead
Finance and
Functional Tester - Finance
BPC
Functional Tester - BPC
BW Technical test lead
Test Team:
HANA Test & resolution lead
Sales and
Consultant Test team lead and Sales
Distribution
Functional Tester - Delivery
BW Technical test lead
Test Team: HANA Test & resolution lead
Manufacturing Consultant Test team lead and Sales
Functional Tester - Delivery
BW Technical test lead
Test Team:
HANA Test & resolution lead
Global
Functional Tester - PO and Spend
Sourcing
Functional Tester - AP and Performance
BW Technical test lead
Test Team:
HANA Test & resolution lead
HR and
Functional Tester - HR
Planning
Functional Tester - IP
Staff
Mar
Apr
May June July Aug
Company
Consultant
Company
Consultant
Consultant
Consultant
Company
Company
Consultant
Business
Business
Company
Consultant
Business
Business
Company
Consultant
Business
Business
Company
Consultant
Business
Business
Company
Consultant
Business
Business
100%
100%
75%
100%
20%
100%
50%
50%
100%
100%
100%
75%
100%
20%
100%
50%
50%
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50%
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20%
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50% 50%
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50% 50%
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50% 50%
100% 100%
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20%
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50%
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25%
25%
100% 75%
100% 75%
100% 75%
100% 75%
20% 20%
100%
50% 100%
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration Four BW to HANA Migration
Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
Budgeting a HANA Migration Project - Systems
There are a set of items you need to budget for. From a system
perspective you will need to consider:
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Hardware quotes
Give at least two vendors your sizing estimate and ask for quotes.
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Vendor Support
Make sure your hardware vendor include 3-years support in your purchase
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Upgrades
Plan and budget for any BW upgrades required before going to HANA (7.3)
Do the pre-steps BW cleanup we outlined earlier as soon as possible
and then the formal sizing effort, before requesting a hardware quote.
Mid-Size Budgeting Example HW Quotes - HP
This example quote is for a
mid-sized 512 GB memory
box with 4 x 10 cores CPUs
and 7 TB disks based on
Hewlett-Packard's high-end
DL-980 Box.
Including all services and
support agreements, this
quote is only $150,000
Certified HANA vendors such as HP, IBM, Dell, Cisco, NEC, Hitachi and
Fujitsu has dedicated staff to help you get a detailed quote in matter of days.
Small Example HW Quotes - Dell
This is example is a quote for a smaller
128 GB Memory Box with 2 x 10 cores is
based on Dell’s R910 platform for a HANA
sidecar usage for less then $40,000
(including tax!)
Most of the smaller HANA systems from
the other vendors are similarly prices and
depends on the number of boxes you
buy, existing discount agreements and
the size of the deals you are requesting.
Expect competitive bids for larger systems and
similar vendor pricing for similar capabilities
Budgeting a HANA Migration Project - People
Remember to budget for
HANA training for your
employees before the
project starts
Class schedules are
found at: training.sap.com
On average plan for
$3,000 to $6,000 to
train each team
member on average
plus travelling costs.
Budgeting a HANA Migration Project - People
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Experienced HANA consultants are in very high demand, so
budget $1,600 to $2,300 per day for these resources (US)
•
Testers with BW experience and some HANA training can be
found for more normal consulting rates.
•
Solid hands-on migration experience with SP4 and SP5 is key
for SAP BW to HANA migrations. Don’t confuse this with
HANA ‘sidecar’ experience. It is very different.
When staffing your HANA project, don’t schedule
the start date before you get your staff. You want
the best resources, not whoever is available.
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration
Four BW to HANA Migration Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
On-Going Support Tasks and Staff Required
Major on-going support tasks consists of:
 User and role maintenance
 Security maintenance
 Backup and disaster recovery
 Load balancing, monitoring and hardware maintenance
 Software patches and notes for HANA, BW and Components
 Cleanup, NLS, Archiving, log deletions
 Transports, table copies, system copies and data copies
 Periodic system upgrades
While most tasks are similar to the old relational database systems, the way
we do this is quite different. Make sure your HANA support staff is onboarded
early and trained before cut-over to production of your migration project.
On-Going Support Tasks and Staff Required
The staffing roles required is normally:
- One basis resource for system admin and monitoring for every
4-5 environments (do you need 24-hours support?)
- One resource, part-time, for security, roles and access
maintenance (depends on number of users)
- One BW resource for monitoring loads, issues and fixes (could
be part-time role in small and mid-sized organizations)
The support of HANA is actually easier than the traditional basis support.
Most functions are done in a single interface and many of the tasks are
significantly simplified due to the inherent performance of HANA.
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Introduction
Sizing Your HANA System
HANA Hardware Options
Pre-Steps for BW to HANA Migration
Four BW to HANA Migration Options
Staffing a HANA Migration Project
Creating a Budget for your HANA Migration Project
On-Going Support Tasks and Staff Required
A Milestone Example
Wrap-Up
A Milestone Example
ID
First we clean the BW
system, size the box and do
the health check we
covered earlier in this
session.
Then we order hardware
and get the vendor to install
the hardware.
Be prepared for 4-6 weeks
lead time for hardware
delivery
While waiting for hardware,
upgrade BW, apply SPS and
execute training
1.0
1.1
1.2
1.3
1.4
1.5
2.0
2.1
2.2
2.3
3.0
3.1
3.2
3.3
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
6.0
6.1
6.2
Task
BW Preparations
Clean BW system (12 steps)
Execute BW readiness check (note: 1729988)
Conduct hardware sizing
Obtain 2 quotes and select vendor
Complete SP install and Upgrades required
HANA Install of Hardware
Vendor Install of Hardware
Install SAP BW software on HANA box
Conduct HANA health check
Onboarding
Execute training for HANA project team
Project charter, standards and procedures
Setup roles, security and access
HANA Migration
Copy BW to sandbox
Sandbox migration of database
Functional test of queries, security and interfaces
Test DTPs and loads
Checkpoint and lessons learned
BW Development box migration
Functional test of queries, security and interfaces
Test DTPs and loads
Copy Prod to QA box
BW QA box migration
Functional test of queries, security and interfaces
Test DTPs and loads
Backup Prod and contingency planning
BW Prod box migration
Functional validation of queries, security and interfaces
Validation of DTPs and loads
Contingency time
Project close
Lesson learned and issues review
Project close
Weeks
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 13
A Milestone Example
ID
Start with refreshing the
sandbox from the
development environment.
Migrate the Sandbox
carefully and spend time on
testing.
Do not rush this part of the
project and document all
activities (create a
migration script of all
activities)
Plan ‘contingency’ time for
any delays and do a cut-over
on the weekend.
1.0
1.1
1.2
1.3
1.4
1.5
2.0
2.1
2.2
2.3
3.0
3.1
3.2
3.3
4.0
4.1
4.2
4.3
4.4
4.5
4.6
4.7
4.8
4.9
5.0
5.1
5.2
5.3
5.4
5.5
5.6
5.7
6.0
6.1
6.2
Task
BW Preparations
Clean BW system (12 steps)
Execute BW readiness check (note: 1729988)
Conduct hardware sizing
Obtain 2 quotes and select vendor
Complete SP install and Upgrades required
HANA Install of Hardware
Vendor Install of Hardware
Install SAP BW software on HANA box
Conduct HANA health check
Onboarding
Execute training for HANA project team
Project charter, standards and procedures
Setup roles, security and access
HANA Migration
Copy BW to sandbox
Sandbox migration of database
Functional test of queries, security and interfaces
Test DTPs and loads
Checkpoint and lessons learned
BW Development box migration
Functional test of queries, security and interfaces
Test DTPs and loads
Copy Prod to QA box
BW QA box migration
Functional test of queries, security and interfaces
Test DTPs and loads
Backup Prod and contingency planning
BW Prod box migration
Functional validation of queries, security and interfaces
Validation of DTPs and loads
Contingency time
Project close
Lesson learned and issues review
Project close
Weeks
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 13
Where to Find More Information
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www.sap-press.com/products/SAP-HANA%3A-An-Introduction.html
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SAP HANA: An introduction. Book by Dr. Berg and Penny Silvia
published by SAP Press. 2nd edition
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http://www.saphana.com/welcome
SAP’s Main page for all SAP HANA related information
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•
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http://www.saphana.com/community/try
BW Powered by HANA Demo
http://scn.sap.com/community/netweaver-bw-hana
SAP NetWeaver BW Powered by SAP HANA Community
7 Key Points to Take Home
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Cleaning your BW system (12 steps) will make your HANA system
smaller and less costly
There are programs to do readiness checks for a BW system
There are programs to do sizing of a BW system
While one is more common, there are actually 4 possible
approaches to the HANA migration project
There are 7 different certified HANA vendors and many options for
small, medium and large systems
Budgeting should include HANA training, BW cleanup, BW 7.3
upgrade (SPS), as well as support staff required or reorganized
Most HANA projects can be done in matter of weeks, only
extremely large systems may require 4-7 months.

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