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Enterprise Storage Reinvented Stanislav Dzúrik FTSS Storage IBM Slovensko The IBM XIV Storage.

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Presentation on theme: "Enterprise Storage Reinvented Stanislav Dzúrik FTSS Storage IBM Slovensko The IBM XIV Storage."— Presentation transcript:

1 Enterprise Storage Reinvented Stanislav Dzúrik FTSS Storage IBM Slovensko The IBM XIV Storage

2 Traditional Enterprise Storage Solutions With this legacy architecture, scalability is achieved by using more powerful (and more expensive) components with higher energy consumption Cache Controllers Interface Building blocks: Disks/Flash Cache Controllers Interfaces Interconnects JBOD Scale Up PERFORMANCE RELIABILITY SCALABILITY = $ + E

3 Traditional Enterprise storage solutions Traditionally storage is improved by further optimizing the existing concept, e.g. Using faster and more reliable drives Adding additional cache Manufacture new backplanes Add new hw/sw layers for virtualization and thin provisioning Forklift ´upgrades´ This comes with a price, resulting in high cost, complex solutions and increased power consumption We have to look for different ways to achieve our ever growing need for larger, faster, flexible, efficient and more reliable ways to store our data We had to reinvent the way we look at storage

4 IBM XIV Storage Architecture – A Disruptive GRID Interface Design principles: Massive parallelism Granular distribution Off-the-shelf components Coupled disk, RAM and CPU User simplicity Data Module Interface Data Module Switching Scale Out

5 IBM XIV Enterprise Storage Solution IBM XIV Storage is based on the following basic principles: The entire system is one Virtual space Simple storage provisioning an thin allocation “Self Healing” - the failure of a component is automatically fixed with no impact on the reliability and performance of the system “Self Tuning” - the provisioning and management of data should always result in the optimal use of available space The speed of data access is not dependent on the speed of the drives (no disk hotspots) Make use of readily available standard components “GREEN” - Efficient use of resources: Power, Cooling, Space Best in class TCO - Cost effective

6 IBM XIV Storage Distribution Algorithm Each volume is spread across all drives Data is “cut” into 1MB “partitions” and stored on the disks XIV algorithm automatically distributes partitions across all disks in the system pseudo-randomly Data Module Interface Data Module Interface Data Module Interface Switching XIV disks behave like connected vessels, as the distribution algorithm aims for constant disk equilibrium. Thus, IBM XIV’s Storage overall disk usage could approach 100% utilization when loaded

7 Node 4 XIV Space Distribution on System Changes Data distribution only changes when the system changes Equilibrium is kept when new hardware is added Equilibrium is kept when old hardware is removed Equilibrium is kept after a hardware failure Data Module 2 Data Module 3 Data Module 1 [ hardware upgrade ] Data Module 4

8 XIV Distribution Algorithm on System Changes Data distribution only changes when the system changes Equilibrium is kept when new hardware is added Equilibrium is kept when old hardware is removed Equilibrium is kept after a hardware failure Data Module 2 Data Module 3Data Module 4 Data Module 1 [ hardware failure ] The fact that distribution is full and automatic ensures that all spindles join the effort of data re-distribution after configuration change. Quick recovery from failure. No disk hot spots - all drives are used equally

9 Storage in a grid Data is redundantly spare space are spread over all the drives, with parallel access and smart caching to match the performance of high end systems If a drive fails, the system replicates the lost data across the other drives. System is fully redundant in less than 30 min with minimal performance impact. Efficient and Green by design Simplified architecture Each volume a spread on all the drives Use of large SATA Disks Integrated software Thin, smart and simple to manage Simple migrations How does it work?

10 Making Storage Efficient Comparing raw capacity to actual application data capacity in traditional storage system shows an amazing gap Several factors contribute: Over-provisioning of space Backups, Clones, BCVs and Snaps Orphaned space The XIV Enterprise architecture makes efficient use of the capacity so that you can meet your needs with far less capacity Enables top reliability and high and consistent performance with energy efficient high density components (e.g. SATA)

11 Over-provisioning Traditional systems require upfront allocation of predicted space Volume resizing in the storage system is complex Volume resizing is virtually impossible for applications Inevitable application downtime The result: Users tend to pad requirements, leading to over-provisioning Excessive capacity goes unused for months, years or forever Excessive floor-space, power and cooling is wasted You’re stuck with old systems Can’t benefit from expected decline in price and advances in technology

12 XIV Thin Provisioning Concept Virtualize volume size Define virtual volumes of maximal capacity for each application Map them to much less physical storage Scale physical storage over time without having to change the virtual volume size The result: Application volumes never need to be resized No application downtime Buy storage over time, just when you actually need it Don’t pay for over-estimation Don’t waste floor-space, power, and cooling on unused space Keep users happy Thin provisioning yields 20-50% saving in infrastructure cost over a period of time

13 How Does It Work? The system is bound by two parameters: Hard capacity: The net physical capacity of the system Soft capacity: The virtual capacity of the entire system Hard capacity is determined by the system size Soft capacity is defined by the administrator Define virtual volumes out of the system’s soft size Pool-based thin provisioning Thin provisioning is set independently for each storage pool Protection for critical applications Hard and soft capacity can easily be moved from one pool to another Map each virtual volume to a physical capacity taken out of the system’s hard size

14 Some Notes About Thin Provisioning Monitoring is crucial Monitor actual capacity usage and how fast it is growing Make sure you add capacity in time or your applications will not be able to write data Actual savings depend on The application profile Administration standards of the company

15 Differential Backups and Snaps Backups: Periodic copies of entire volumes Maintain regulation compliance Restore data upon corruption or human errors Traditional systems use full volume copy for each backup Each copy require allocation of the entire volume capacity The solution: Differential backups through XIV Snaps Save only deltas from the main volume No upfront allocation - Allocate space over time when new data is written Actual savings depend on Number of snapshots Application profile Using differential backups yields 15-30% saving in infrastructure cost

16 No Orphaned Space In traditional architectures some capacity is effectively lost over time The complexity of volume and performance management The ever changing applications and their storage needs The result: Idle storage chunks are scattered in the system Reclaiming them is more expensive than buying a new system The solution: Let the system automate volume allocation and management Maintaining perfect equilibrium across the system throughout its lifetime Automatically handle tasks such as striping, volume resizing, migration etc. The result: No space is ever lost 10-20% of traditional systems space is orphaned and will never be reclaimed. With the new architecture, no space is ever lost.

17 Stretching a TB to the Max Real-life capacity gain with XIV Meet the same functional needs with much less net TBs

18 How Capacity Efficiency Translates to Savings Serve the same applications with fewer TBs Fewer TBs means less powerFewer TBs means less floor space

19 SATA disks to save even more power The power consumption of a system is the sum total of the power used by its components Since there are so many of them, disks are typically the biggest users SATA vs. FC disks SATA drives provide 2-10 times the capacity Lower spin rate means each disk requires 25-30% less power The result: A lot less power is used to drive each raw TB (3 to 15 times less) using SATA drives is not a compromise The XIV architecture offers primary storage performance for all volumes Perfectly adapt to any future changes in volumes and capacity Enjoy the power–efficiency of SATA drives with a supporting architecture that handles tier-1 performance and reliability

20 System Power Usage Power consumption of a system comparable to XIV is 180– 380W per raw TB Typically using 146GB 15K rpm disks Power consumption of an XIV rack is 7.7KW 180TB raw capacity, 79TB net capacity 42W per raw TB today Rack power consumption will not change much with 2TB disks But capacity will double Consumption per raw TB expected to drop to 21W The new solution uses 4 to 9 times less power for the same (or better) performance and reliability levels

21 System Power Efficiency The result is a remarkable reduction in power usage for each raw TB

22 Power per TB is only Half the Story Using less power to drive a storage system means Direct power cost savings Cooling savings, typically adding 30% - 100% of the system power consumption depending on data centre efficiency Smaller UPS infrastructure Power is becoming a limited resource It’s not just a a matter of paying more Power companies unable to deliver more power to satisfy the expected growth

23 XIV TCO AdvantageManagement and migration Cost

24 Ease of Management

25 System administration is virtually effortless Complex tasks are handled automatically under the hood Always optimized Not prone to human errors Things an administrator no longer need to worry about: Planning volume layout, Optimizing for performance Tiering data to service levels Ease of provisioning means better service to users Instant creation of snapshots makes backup procedures simpler Simple management means fewer administrators can give better service to users

26 Migration Automatic data migration Migrating thick volumes to thin provisioned volumes Online data migration from other Storage arrays New hardware can be added to the system Better performance, less power, more density Outdated hardware can be phased out and removed With the new solution, migration is effortless !

27 XIV TCO AdvantageSummary

28 AttributeTypical SystemIBM XIV StorageAdvantage Disk DrivesFC small factorSATA >1TB4-9 times more storage (with less power and same performance) ProvisioningThickThinAvoid over-provisioning, grow gradually over time with the best available technology Backups/SnapsFullDifferential SnapsKeep backups lean Volume Allocation ManualSmartOrphaned space is never an issue ManagementComplexSimpleMinimize learning curve and ongoing management overhead Enterprise Storage Reinvented

29 Ďakujem za pozornosť Stanislav Dzúrik


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