11

Capacity Planning Methodologies / Reporting for Capacity Planning Methodologies / Reporting for Storage Space and SAN Port UsageStorage Space and SAN Port Usage

Bob DavisBob DavisEMC Technical ConsultantEMC Technical Consultant

22

I need to do what … how can we do that?

33

Agenda Agenda

Truly understand all theTruly understand all the requirementsequirements

Performance viewPerformance view

Planning for the growth - new toolsPlanning for the growth - new tools

Do you need to be “IT Green” (save power)Do you need to be “IT Green” (save power)

44

Storage and SAN Growth

Understand your growth requirements– GBs– Load (MB)– New application type (VmWare, DB, DW, etc.) – Is everything really OK today

Planning and Provisioning - Trend Design Plan Meet service-level agreements

Monitoring and Reporting Monitor storage to improve asset usage

Device Management Configure and optimize storage

Planning and Provisioning

Monitoring and Reporting

Device Management

55

Storage Capacity Management Guidelines:

– Definition of reserve capacity

– Expected utilization criteria

– Acquisition thresholds – Hardware Technical and Performance Requirements Guide

66

Basic Enterprise Storage Assessment Reporting recommendations: Top systems by total space in use

Top volumes by percentage used

Top 10 most accessed systems

Top 10 most modified systems

Top 10 systems with new storage creation

Bottom 10 most accessed systems

Bottom 10 most modified systems

Bottom 10 systems with new storage creation

Top 10 systems with large duplicate files

Advanced Enterprise Storage Assessment Report recommendations: Database-space usage

Database-table usage

Database-usage detail

Quick View report on file types

Files not backed up

Mail-server message and attachment summary

Mail-server storage summary

Paths trend

Space usage by file type

Storage-activity trend

77

Continue to Analyze

Identify potential primary storage-capacity issues

Understand what applications and files are most affecting your environment

Validate and track the power of your archive strategy

88

99

Storage and SAN Growth

Differentiators:– Cost– Performance– Energy Efficiency– Recoverability

• Local• Remote

Security

Encryption

VmWare

Technical Options:– RAID Type– Drive Type– Replication

– Port Speed

Best Practice:Use different

physical drives for different

tiers

1010

Before you start - Analyze Performance and Health

Performance monitoring – Graphical/tabular performance

views and thresholds– Historical-trend analysis

(available through Performance Manager)

– Data can be exported to .csv file

Consolidated Alerts View for all devices

– Policy-based– Alerts for performance, errors,

availability, health

Display device health for all elements

– HBAs, switches, storage arrays

1111

We need to talk about this in depth

Heart Beat

1212

Automated Report

1313

Understand Bottlenecks – Today and Why

1414

Understand the End-to-End Topology

– Servers – HBAs– SAN devices– Ports / Speed – Storage arrays – Data Layout (why

it is this way)– Application

1515

Configuring Too Few Components Causes Growth Problems

Oops!

Front-End

(Hosts)

Cache & Matrix

Back-End (DAs)

Disks

1616

Uneven Utilization Can Cause Growth Pain

Ouch! Oof! Zoicks!

Owie!

Argh!

1717

Celerra NSSymmetrix DMX-4

Symmetrix Priority

Controls

Virtual LUN Technology

Dynamic Cache

Partitioning

CLARiiON CX3

Navi QoSManager

Virtual LUNTechnology

Virtual Provisioning

Symmetrix Optimizer

Virtual Provisioning

(Mid 2008)

Automated Volume

Management

Celerra Virtual

Provisioning

Celerra FileMover

Software Based Tiering Capabilities

Fibre Channel and SATA Intermix

1818

Need to be Green? (i.e. do I have power and PDU space)

94%less energy

87%less energy

73%less energy

50%less energy

32%less energy

73 GB15K FC

146 GB 15K FC

300 GB 10K FC

500 GB 7.2K FC

787 kWh/yrPer TB

1,434 kWh/yrPer TB

3,048 kWh/yrPer TB

6,096 kWh/yrPer TB

1 TB7.2K SATA

393 kWh/yrper TB

73 GBFlash Drive

4127kWh/yrper TB

Performance Capacity

Power/TB

30xIO/s jump

Power / GB – Energy To Store 1TB of Information*

* Including data center & array infrastructure

1919

Summary - Storage

Basic rules for growth– Configure enough resources– Utilize resources evenly– Simple data layouts are better

Best practices for Tiering– Different tiers should use different physical disks, share DAs– Tiered systems should use Dynamic Cache Partitioning (DCP)

Selecting the right drive and protection type– What to place on Flash Drives

New Features that affect growth– Working with Virtual Provisioning– New prefetch for Open Systems

2020

Summary - SAN

Design for 70% of measured maximum I/O per second or MB/sec per storage port:

The number of I/Os is finite, even at a 100% read hit – 4 KB I/Os: 1883 IO/sec, 7.5 MB/sec – 8 KB I/Os: 1626 IO/sec, 13.0 MB/sec – 32 KB I/Os: 1428 IO/sec, 45.6 MB/sec – Overloading the ports results in response time degradation

Determining the ISL– Routing – Trunking – Bandwidth utilization (<50 percent of its actual bandwidth potential) – Redundancy requirements

Determining the Port Sparing Tools - EMC Work Load Analyzer, Navisphere Analyzer, ControlCenter,

VisualSAN/SRM, and Native switch managers.