Automated SAN Storage Tiering: Four Use Cases
Șerban ZîrnovanEnterprise Business Manager / South Adriatics, Bulgaria & RomaniaDell | Central Emerging Europe, LE EM-EMEA Commercial
Data Growth – by 2020…
Digital Universe
Unstructured data
Source: IDC White Paper sponsored by EMC, The Digital Universe Decade - Are You Ready? , May 2010
44X Growth
67X Growth
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Other trends driving tiered storage
Virtualization
Complexity
Diversity
Compliance
Traditional SAN designs bring limited benefits• Storage objects are bound to physical resources
– Statically configured and operated– Individual islands of storage within the SAN– Performance and capacity resources
not easily reallocated
• Difficult and costly to operate– Specialized training and staff– Many planned outages for upgrades and migrations
• Professional services often required – Just to get a configuration operating– To implement changes
• Enterprise features require additional software licenses– High acquisition and software support costs – Costs continue to increase as the environment grows4
EqualLogic PS Series is changing the way people experience storage
By delivering dynamic virtual storage solutions that enable IT organizations to address changing business needs in real time at a reasonable cost
• Breakthrough storage economics• Next-generation storage from a global leader• Enables end-to-end data center virtualization• Complete solutions provided by Dell
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Intent: To mask underlying complexity for productivity gains
Benefits• Reduce cost and complexity• Enhance performance tuning• Enable online data migrations • Simplify storage provisioning • Optimize capacity utilization• Centralize and simplify
storage and data management
• Seamless scalability
Architectures Host-based Network-based Array-based
Storage virtualization abstracts logical storage operations from physical resources
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WITH NEXT GENERATION STORAGE• Simplified storage management reduces OPEX
•More capacity managed per storage administrator
• Seamless Expansion through Virtualization
• Freedom from traditional disruptive, fork-lift expansion and upgrades
• Lean Operations reduce CAPEX• Purchase storage on-demand
Storage virtualization is a cornerstone of Dell’s game changing storage solutions
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Intelligent, virtualized storage simplicity gives time back to the IT administrator Intelligent Virtualized
Storage(Simple and Automated)
How to set up a network
Workload capacity needs
Traditional Storage(Complex and Labor Intensive)
InteroperabilityOperating system to driver/FW revision matrix
Operating system to management SW revision matrixHost Software purchase and installation
Details, Details, DetailsDisk Speeds
Controller DetailsInternal controller balancing, LUN masking
Spindle balancingFeatures availability and license counts
RAID levelsPerformance vs. availability implications
Sparing rulesNetwork
Zoning, Port loadingSwitch management and monitoring
Workload NeedsCapacity needs
Availability & backup needsIO sizes & patterns
What part of workload is on which type of RAIDInteraction with other workloads (sharing) on SANWorkload mapping to network links on storage arrays
Workloads across array controllers
Specialist ANY IT staff member8
EqualLogicIntelligent, seamlessly expandable virtualized iSCSI SANVirtual storage architecture enables:
• Efficient Enterprise Scalability Seamless scaling of both performance and
capacity Investment protection – no fork-lift
upgrades• Powerful & Simplified
Management Intelligent and automated management
• Perpetual self-optimization Automated load balancing across disks,
RAID sets, connections, cache and controllers
• All-inclusive functionality Enterprise software capabilities included,
no add-on licenses
EqualLogic can provide storage management manpower savings of 45 days/year – ESG
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Simple SAN consolidation = single-tier storage
Source: TheInfoProTM Storage Study, December 2009
(12/14/09): F1000 Sample. n=177.
Backup ContentVirtualized Servers & OS imagesData Warehouse & DB contentArchive ContentUnstructured file content
?
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Where data lives today….
Source: TheInfoProTM Storage Study, December 2009
Anticip
ated G
rowth
% of St
orage
Capaci
ty on
This
Tier
(12/14/09): F1000 Sample. Tier 0:Capacity, n=20; Anticipated Growth ,n=19; Tier 1:Capacity, n=180; Anticipated Growth, n=174; Tier 2:Capacity, n=170; Anticipated Growth, n=162; Archive Tier:Capacity, n=117; Anticipated Growth, n=113.
Perfo
rman
ce
Per GB Cost
Storage tiering reduces costs by matching storage with business need
Per-gigabyte costs for capacity-optimized Tier 3 storage media
can beless than 1/10th the
costof performance-
optimized Tier 0 media†
1.7XTier 2
2.5XTier 1
11XTier 0
Reduces costs by properly matching storage with business need
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XTier 3
†Cost multiples are estimates only, based on recent component cost data, and subject to change.
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Storage tiering can be labor-intensive
Inventory Applications
Categorize
Workloads
Forecast Storage Growth
Forecast App
GrowthDefine Storage
TiersInstall SAN
Arrays
Associate Arrays with
Apps
Monitor Performanc
e
Monitor Capacity
FillFine-Tune Tier
SettingsForecast
Storage Growthetc.
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Automation tools on EqualLogic PS Series SANs simplify tiering design and management
Tier by…•Disk Medium• RAID Policy•Data Protection Treatment•Organizational Structure• Location•Other Criteria
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EqualLogic PS Series SANs support 3 techniques for tiering storage
• Auto-Tiering (via Automatic Load Balancing)
• RAID Preference Configuration
• Pool-Based Tiering
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Terminology review
Volume
Member
Pool
Group
RAID
Thin Provisioning
IOPS
SAN HQ
Challenge #1: A mix of applications and an overworked staff
+ +=
Ethernet Switch Fabric
•Leverages PS Series Auto-Load Balancing algorithms•Fully automated mechanism
Suggestion: Use PS Series automatic tiering
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Challenge #2: Certain applications in the data center with special storage needs
• Uses Group Manager Advanced volume settings• Requires multiple
RAID policies within a single pool• RAID preference
policy will attempt to honor setting
Suggestion: Configure PS Series RAID Preference
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Challenge #3: Multiple independent user groups that need dedicated storage
+ +=
Ethernet Switch Fabric
• Pooling mechanism commits arrays to applications or user groups• Similar to RAID preference, but policy is enforced, not simply prioritized
Suggestion: Use PS Series pooling
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One simple scheme for leveraging PS Series pool-based auto-tiering
Tier
Application Workload
Storage Medium
RAID
0 Ultra-high random IOPS
SSD 10
1 High random IOPS 15K RPM SAS
10
2 Moderate IOPS 10K RPM SAS
50
3 Low IOPS SATA 50
Define tiers using PS Series featuresall-inclusive with no additional costs
BASESOFTWARE FEATURES
Management Instant on ‘set-up’ manager Group manager Rapid provisioning Roles-based management
Data Protection and Availability
RAID 5, 6, 10, and 50 Automatic RAID placement Multi-path / IO support
Maintenance Phone home Enclosure monitoring system Performance monitoring
ADVANCEDSOFTWARE FEATURES
Storage Virtualization Complete SAN virtualization Thin provisioning Auto-load balancing Automatic storage pools &
tiering Array evacuation
Data Protection and Recovery
Writeable snapshots Multi-volume snapshots Instant restore / cloning Multi-way replication for
disaster recovery
Multi-Group Monitoring SAN HeadQuarters (SAN HQ)
event & performance monitoring
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Server Management Integration VSS and VDS Providers Automatic MPIO Connection
Management Auto-Snapshot Manager/
Microsoft Edition Exchange , SQL Server and
Windows file systems data, now including MSCS
Hyper-V Support* Auto-Snapshot Manager/
VMware Edition Hypervisor-aware SAN-based
snapshots and rapid recovery
ASM/VE 2.0 VMware vSphere 4.0
Advanced MPIO integration VMware SRM Storage Adapter
Automated DR for thevirtual data center
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Challenge #4: VDI stores include both “hot” and “cool” data
SSD Speed & HDD Capacity
• PS6000XVS/6010XVS combines SSD and 15K RPM SAS on a single array– Automated data
tiering hot data within volumes placed on SSD
• Improves performance of multi-tiered workloads like virtual desktops – Reduces time to boot
multiple VMs by up to 76%†
†Based on testing performed by Dell Labs in May 2010 comparing Dell EqualLogic Firmware v. 4.3 to Dell EqualLogic Firmware v. 5.0 with VMware API for Array Integration. Actual performance will vary based on configuration, usage and manufacturing variability.
Suggestion: Use PS6000XVS/6010XVS “hybrid” arrays
• Fully Redundant & Hot Swappable (5-9’s Availability)– Controllers– 16 or 48 disk drives– Fans and power supplies
• High-end Components– 4 active 1GbE or 10GbE network
interfaces– Enterprise SATA, SAS or SSD drives– 2 or 4 GB battery-backed mirrored
memory
Performance and end-to-end hardware reliability
Hot-Swappable Drive Carriers
Redundant Power Supplies & Fans
Dual Controllers
Enclosure Monitoring
System– Component status– Disk drive health– Temperature
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Manage all tiers via Group Manager
• Provisioning of administrator accounts, volumes (LUNs), snapshots, cloning, replication, RAID preference, pools, etc.• Granular administrator access control, from
group-wide to volume-level management
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SAN HQ is vital for designing, architecting and fine-tuning tiered architectures• Visibility into statistics and utilization at multiple levels
– Volume– Pool– Member – Group– IOPS
• Supports export of trend data for analysis
• Automation and intelligence that accelerates deployments and simplifies operations• High performance and highly scalable iSCSI SAN• All inclusive price with no hidden costs• Enterprise-class system designed for iSCSI• Comprehensive iSCSI ecosystem support
EqualLogic PS Series benefits extend far beyond Auto-Tiering
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ConclusionsReduce CAPEX/OPEXImprove Performance Identify Goals
Set Targets
Learn about EqualLogicPS Series
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