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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
1. Illustration of SAN
2. Requirements of SAN Management
3. SAN Management Hierarchy
4. Management Software
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
1. Illustration of SAN
2. Requirements of SAN Management
3. SAN Management Hierarchy
4. Management Software
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
1. Illustration of SAN
2. Requirements of SAN Management
3. SAN Management Hierarchy
4. Management Software
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
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
3.3Resource Management
3.4 Network Management
3.5 Element Management
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SAN Management Hierarchy
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
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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.
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SAN Management Hierarchy
3.1 Applications Management
3.2Data Management
3.3Resource Management
3.4 Network Management
3.5 Element Management
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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
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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
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SAN Management Hierarchy
3.1 Applications Management
3.2 Data Management
3.3 Resource Management
3.4 Network Management
3.5 Element 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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SAN Management Hierarchy
3.1 Applications Management
3.2 Data Management
3.3 Resource Management
3.4 Network Management
3.5 Element 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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SAN Management Hierarchy
3.1 Applications Management
3.2 Data Management
3.3 Resource Management
3.4 Network Management
3.5 Element 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
1. Illustration of SAN
2. Requirements of SAN Management
3. SAN Management Hierarchy
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
1. Illustration of SAN
2. Requirements of SAN Management
3. SAN Management Hierarchy
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_overviewTop Related