snia-sa 100 chapter 6 san management (version 1.1)

8/22/2019 Snia-sa 100 Chapter 6 San Management (Version 1.1)

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SNIA-SA 100

Introduction to

Network Storage

Chapter 6

SAN Management

Version 1.1


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Coverage

1. Illustration of SAN

2. Requirements of SAN Management

3. SAN Management Hierarchy

4. Management Software

5. Review Questions


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Section 1





5. Review Questions


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Illustration of SAN

SWITCH SWITCH

LAN / WAN

Disks / RAID

Tape LibraryOptical Library

LAN/WANattached clients

Heterogene

ous servers

SAN Fabric

Storage

Systems

Management system


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Section 2





5. Review Questions


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Requirements of SAN

Management Controlling SAN resources from a single point

Monitoring the state of SAN

Servicing a SAN

Identifying and Resolving problems

Preventive maintenance


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Section 3





5. Review Questions



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SECTION 3: SAN Management

Hierarchy

3.1 Application Management

3.2 Data Management

3.3 Resource Management

3.4 Network Management

3.5 Element Management



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SAN Management Hierarchy

3.1 Applications Management

3.2 Data Management






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3.2 Data Management

3.3Resource Management





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Applications Mgt

Data Mgt

Resource Mgt

Network Mgt

Element Mgt

layer5

layer 4

layer 3

layer 2

layer 1

1. Business process policy/SLA definition/execution

2. Resource optimization across business processes

3. Application optimization, failover/fallback, scalability

1. real time copy (mirroring, remote copy,

replication)

2. point-in-time copy ( snapshot)

3. Data sharing

1. capacity management & planning

2. Resource attribution (policy) management

3. Storage sharing (disk & tape pooling).

4. Space management

1. Physical to logical mapping within SAN

network

2. Zoning

3. Performance/availability of SAN network

1. Configuration, initialization, of storage devices.

2. Performance monitoring.

3. Authentication, authorization, security

EndtoE

ndSANMa

nagement



Application Management

Deals with:

Availability, performance and recoverability of applications.

Service-Level Management and control in accordance with SLA.

Resource optimization across business applications. Application Optimization,fail over/fail back.





3.2Data Management

3.3Resource Management





Data Management

Ensuring data availability and accessibility for applications.

Ensuring proper performance of data for applications.

Ensuring recoverability of data.

Management of:

Point-in-time copy.(snapshot)

Data Sharing.

Hierarchical Storage Management (HSM)

Information Lifecycle Management



Hierarchical Storage

Management (HSM)

Deals with storage hierarchies.

Data is classified according the their access frequency.

Policy settings set by administrator.

Less frequently accessed data are archived.

Hi hi l St



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Hierarchical Storage

Management (contd)

Active Data

Recent historical

Offline archival

Increasing

Availability

(Cache/RAM Disk)

(Magnetic Disk)

(Tape/Optical Disk)

Faster response



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How HSM works

A system administrator set file policies on the HSM engine.

Files that fit the policy will be copied to a secondary storage

Catalogs are maintained in the disk

Catalogs act as a pointer to the actual files, even if it has beenmoved to another location.

Examines the access for each administrator-defined set of file

systems

Migrate files that have been inactive for an administrator-defined

period Migration consist of :

Copying the file

Update the file directory

Reclaim the online space for use by other files



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Information Lifecycle

Management

(ILM)

Definition and Scope of ILM

Policies, processes, practices, services and tools used toalign the business value of information with the most

appropriate and cost effective infrastructure from time

information is created through its final disposition.

Source http://www.snia.org/dmf
http://www.snia.org/dmfhttp://www.snia.org/dmf



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3.2 Data Management






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Resource Management

Automated management of existing storage and fabric resources.

Automated corrections where necessary.

Addresses the following tasks:

Storage Pooling ( Disk and Tape Pooling).

Space Management.

Capacity Management.

Policy Management.



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Storage Pooling

Enables many physical volumes, the pool, to appear as one logical

target. Allows repurposing by shifting ownership from one server to

another.

Example: DataCore SANSymphony.

Benefits

Reduced capital cost .

Greater ability to react to ad hoc demands, flexible.


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Storage Pool- An Illustration

SAN

Storage Pool

Dedicated Storage

Server for

management

UNIX Windows Netware LINUX

EMC

HDS IBM Compaq

JBOD SCSIDELL


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Capacity Management

Include volume management, both logical and physical.

Logical unit number(LUN)configurations and disk capacities.

Viewing common capacity metrics across a variety of storage

subsystems. Eg: IBM Storwatch Product.


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Space Management

Manage primary storage efficiently

Delete unwanted data.

Prioritize the usable space.

Release unused allocated space.

Eg: Tivoli Space Manager.


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Space Management -

IllustrationPrimary Level

User Volumes

Large amount of free-space

on primary level maintained

by migrating old

unreferenced data

Migrated data recalled

to primary level when

needed

Migration

Level 1

Migration

Level 2

Data is

compressed


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Policy Management

Policies represent the translation of business goals

to rules and actions.

When rules and conditions are true, the policy actions

are executed. Policy Actions: some activity being performed or cessation of

activity.

Reduces the complexity to manage SAN-based systems.

Eg. IBM Storwatch.


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3.2 Data Management





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Network Management

Deals with the Performance /Availability of SAN network

Monitoring of network paths

Maintenance of network components

Control of logical SAN connections Authentication of clients

Inventorying of network components

Zoning


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Zoning

What is a Zone?

A group of devices in a SAN that can communicate with and

access each other.

Communication is allowed only between devices of the samezone.

Benefits of Zoning

Segregate devices based on operating systems.

Control access to multiple devices.

Enhance network security.

Concurrent testing and maintenance


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Zoning An Illustration

NT

Solaris

HP-UX

NT

Disks

Solaris

DisksHP-UX

Disks

Zoning

Fulfill the SANFabric any-to-any

connection

requirement

Truly enableheterogeneous

SAN.


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3.2 Data Management





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Element Management

Elements that gets managed in SANs are:

Storage Devices.

SAN Infrastructure components.

Servers.

Environmental Software.


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Storage Devices

Disk & Tape Drives

Device discovery

Establishing & maintaining secure logical connections withservers

Fault detection and isolation

RAID subsystems

Management of spare and unused drive

Array configuration. Soft failure recovery.

Tape Libraries

Management of removable media and unused media


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SAN Infrastructure

Components Managing Hubs, Switches, Bridges,Routers and converters

include:

Establishing and maintaining zones- sets of ports to

intercommunicate.

Allocation of storage capacity to severs, applications andusers.

Fault detection and recovery

Asset tracking and maintenance.


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Servers

Server management includes:

HBA management

Fault detection and recovery(use redundant paths).

Controls the logical connection between server and

storage devices.

Asset tracking and maintenance.


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Section 4




4. Management Software5. Review Questions


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Software Components

Software Management includes:

Revision and upgrading

Patching, so as to function properly.

Eg: Drivers, volume managers, cluster managers etc:


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SAN Management Softwares

Examples SANPoint fromVERITAS

SANworks form Compaq

Tivoli SAN Management Software from IBM

SANSymphony from Datacore


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Section 5




4. Management Software5. Review Questions


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Review Questions

Explain SAN Management Hierarchy.

What is Resource Management?Explain Storage Pooling and its

benefits.

What is Zoning? List a few management software available in the market.


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References

http://www.otn.oracle.com/deploy/availability/htdocs/storage_ov

erview

IBM Enterprise Storage Solutions Handbook

Managing a Fibre Channel SANwww.snia.org An Introduction to Zoning-www.McData.com

IBM SAN survival guide
http://www.otn.oracle.com/deploy/availability/htdocs/storage_overviewhttp://www.otn.oracle.com/deploy/availability/htdocs/storage_overviewhttp://www.snia.org/http://www.snia.org/http://www.otn.oracle.com/deploy/availability/htdocs/storage_overviewhttp://www.otn.oracle.com/deploy/availability/htdocs/storage_overview

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