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S ss0886 pendulum-swings-edge2015-v3

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The IT industry has shifted from internal storage, external storage and finally networked storage. Now, some companies are exploring going backwards to new forms exploiting external storage and internal storage. This session covers IBM's foray into the world of converged and hyper-converged systems.

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S ss0886 pendulum-swings-edge2015-v3

  1. 1. © Copyright IBM Corporation 2015 Technical University/Symposia materials may not be reproduced in whole or in part without the prior written permission of IBM. sSS0886 The Pendulum Swings Back – Understanding Converged and Hyperconverged Environments Tony Pearson Master Inventor and Senior IT Specialist IBM Corporation
  2. 2. © Copyright IBM Corporation 2015 Abstract In the early days of IT, storage was internal to its server, over time, storage outgrew its container, and we started have externally attached storage, and benefits like RAID and clustered servers for high availability. Then, SANs, LANs and WANs took the main stage, allowing for greater connectivity and distance. But now, it seems the pendulum is swinging back with converged and hyperconverged systems. This session will provide the motivations, advantages and disadvantages of these new configurations. 1
  3. 3. © Copyright IBM Corporation 2015 This week with Tony Pearson 2 Day Time Topic Monday 10:30am Software Defined Storage -- Why? What? How? (repeats Tuesday) 03:00pm IBM's Cloud Storage Options (repeats Wednesday) 04:30pm Data Footprint Reduction – Understanding IBM Storage Efficiency Options Tuesday 10:30am Software Defined Storage -- Why? What? How? 12:30pm What Is Big Data? Architectures and Practical Use Cases 01:45pm IBM Smarter Storage Strategy (repeats Wednesday) Wednesday 09:00am New Generation of Storage Tiering: Less Management Lower Investment and Increased Performance 10:30am IBM Smarter Storage Strategy 12:30pm IBM's Cloud Storage Options 01:45pm IBM Spectrum Scale (Elastic Storage) Offerings Thursday 12:30pm The Pendulum Swings Back -- Understanding Converged and Hyperconverged Environments Friday 09:00am IBM Spectrum Storage Integration with OpenStack
  4. 4. © Copyright IBM Corporation 2015 The Pendulum Swings on Infrastructure Design Internal Storage • Personal Information Managers (PIM) • Mainframe • AS/400 Advantages Simple, self-contained Disadvantages • Simple, self-contained • Scalability limited to what can fit inside the hardware container • Single Point of Failure (SPOF) (unless you keep 2 or more copies of data across independent systems) • Backups, Security and other Policy enforcement is done on a system-by-system basis individually 3
  5. 5. © Copyright IBM Corporation 2015 The Pendulum Swings to External Storage External Storage • Mainframe • AS/400 • Linux, UNIX, Windows Advantages Two or more servers can directly attach to external storage High-availability clusters RAID for data protection and performance Shared Cache More room for storage growth Centralize features, snapshots and tape drives for backups Disadvantages • Scalability limited to number of hosts attached • Limited distance for external cables 4
  6. 6. © Copyright IBM Corporation 2015 IBM Entry-Level And Midrange Storage Positioning 5 DCS3700 Performance • Host: FC, SAS, iSCSI • 360 SAS, NL-SAS, SSD • DCS3700 Expansion DCS3860 • Host: SAS • 360 SAS, NL-SAS, SSD • DCS3860 Expansion DCS3700 • Host: FC, SAS, iSCSI • 180 SAS, NL-SAS, SSD • DCS3700 Expansion Storwize V5000 • Host: FC, FCoE, SAS, iSCSI • 960 SAS, NL-SAS, SSD • Storwize Expansion Storwize V3700 • Host: FC, FCoE, SAS, iSCSI • 240 SAS, NL-SAS, SSD • Storwize Expansion Random workloads Sequential workloads Deep Computing Storage (DCS)Storwize family built with IBM Spectrum Virtualize™ 12 or 24 drives in 2U rack space 60 drives in 4U rack space
  7. 7. © Copyright IBM Corporation 2015 The Pendulum Swings to Networked Storage SAN LAN Advantages Many more hosts can be attached Greater distances enables Disaster Recovery Fewer, larger systems like Tape Libraries easier to manage Disadvantages • SANs and LANs requires different skill sets • OS-specific and device-specific management tools Networked Storage • SAN and NAS attached storage systems • IBM Spectrum Scale 6
  8. 8. © Copyright IBM Corporation 2015 The Problem: Islands of SAN, File and Object level data SAN-level Storage OS-specific file systems on direct -attach or SAN-based devices Sharing requires file transfers Provides “Context” for Analytics of Social and Mobile transactions File-level Storage NAS encourages sharing across social networks Desire for file sync-and- share across desktops and mobile HDFS requires transfer (ingest) from other sourcesJFS2 EXT4 NTFS CIFS HDFS NFS Object-level Storage New Web and Mobile apps prefer Object-level access Amazon S3 OpenStack Swift 7
  9. 9. © Copyright IBM Corporation 2015 Spectrum Scale – Flexible File and Object Storage FS1 FS256. . .Exabyte-Scale, Global Namespace One big file system or divide into as many as 256 smaller file systems Each file system can be further divided into fileset containers Flash and Disk LUNs are called Network Shared Disks (NSD) Metadata can be separated to its own Pool or intermixed with data Files can be migrated to Tape 8
  10. 10. © Copyright IBM Corporation 2015 IBM Spectrum Scale™ – Supported Topologies Twin-tailed SAN Internal, Direct-Attach Shared PoolsFPO Pools NSD Servers Access files on direct, twin-tailed or SAN attached disk Can export files to application nodes File Placement Optimization (FPO) Servers Access files on direct attached disk Exports files to other FPO servers External Clients Access files via file and object protocols over IP network TCP/IP 9 NSD Clients Access files via SAN, TCP/IP or RDMA TCP/IP or RDMA network
  11. 11. © Copyright IBM Corporation 2015 IBM Spectrum Scale™ replaces other POSIX file systems SAN Direct-Attach SAN-level Storage JFS2 EXT4 NTFS • Works like OS-specific file systems • No file transfers required between OS • Linux on x86, POWER and z Systems TCP/IP or RDMA Network Twin-tailed 10
  12. 12. © Copyright IBM Corporation 2015 IBM Spectrum Scale™ – More than just a file system! 11 ROBO Other NFS Other Datacenters Scale Active File Management (AFM) caches data to where it is needed, can be used to migrate from other NFS Information Lifecycle Management (ILM) moves data across tiers of flash and disk Hierarchical Storage Management (HSM) migrates infrequently accessed files to tape, automatically recalls back when accessed Local Read-Only Cache (LROC) caches the busiest blocks of files on local flash Disaster Recovery (DR) asynchronously mirrors data to remote locations Migrate/Recall Tape NSD Client
  13. 13. © Copyright IBM Corporation 2015 SAN Twin-tailed Protocol Servers NFS, CIFS AIX, Linux, Mac OS X, Windows, VMware, z/OS Feature of Spectrum Scale on Linux Share files with clients using NFS, CIFS and Object protocols All nodes can share the same data If Protocol Server Node fails client connections are moved to another server Protocol Server Node(s) need “NSD Server” License External Clients need no Spectrum Scale License Clustered Protocol Servers 12 TCP/IP OpenStack

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