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					                      Extending Automatic Storage Management to
                      Manage ALL Data
                      Oracle Database 11g Release 2
                      Ara Shakian
                      Principal Product Manager

Oracle Confidential
               The following is intended to outline our general
               product direction. It is intended for information
               purposes only, and may not be incorporated into any
               contract. It is not a commitment to deliver any
               material, code, or functionality, and should not be
               relied upon in making purchasing decisions.
               The development, release, and timing of any
               features or functionality described for Oracle’s
               products remains at the sole discretion of Oracle.

Oracle Confidential
                      Table of Contents

          • Storage management challenges
          • ASM Overview
          • ASM in 11gR2 takes it the next level
                •     What is it
                •     How does it work
                •     How do I manage it
                •     Benefits
          • How do I get from here to ASM
          • ASM reference customers

Oracle Confidential
                Challenges of Managing
                Data Explosion

       • Lack of a single optimal solution for all data
              • Lack of automation to reduce complexity
              • Managing multiple software layers
       • Complexity of managing performance
              • Eliminating hot spots
       • Multi-vendor support logistics and finger
       • Reducing storage Total Cost of Ownership

Oracle Confidential
                 ASM Is Most Popular
                 Storage Manager
       • De-facto standard for RAC and grid
         deployments, >65%
       • De-facto standard for VLDB
       • Large and growing adoption for
         single instance deployments, >20%
       • Thousands of customers using ASM
       • One of the most popular features in
         the database

Oracle Confidential
              ASM is Storage Management Platform of Choice
                      An optimal storage management solution for
                       database and general purpose files

                                     •   Simplifies and automates storage management
       ASM Disk Group                •   Integrated cluster and single node framework
        ASM Disk
                                     •   Storage pooling with easy provisioning
         ASM Disk
           ASM Disk                  •   Optimal performance by default
             ASM Disk
               ASM Disk              •   Best availability and scalability
                                     •   Lowest TCO
                                         • Consolidates and eliminates waste
                                         • No additional cost
                                     • Manages ALL data             11.2

                        Lowers the cost of storage management

Oracle Confidential
                 Dynamic Rebalancing
                • Simple    provisioning
                      • Add, drop or resize

                                                ASM Disk
                                                ASM Disk    ASM Disk
                                                            ASM Disk    ASM Disk

                                                           Disk Group
               • On-line capacity management
               • Eliminates manual I/O tuning
               • Maintain optimal performance
               • Storage migration on line

Oracle Confidential
                      Enables Storage Consolidation
                      Clustered Pool of Storage

             Local Area Network
                                                     • Shared storage across
                                                       several databases
              RAC                 RDBMS      RDBMS     • RAC and Single Instance
              ASM                 ASM        ASM
            ERP FIN               CRM         HR

                                                     • Benefits:
                             ERP Database              • Simplified and Centralized
                              HR Database                management
                             CRM Database
                                                       • Higher storage utilization
                                                       • Higher performance
                              FIN Database

                        ASM Disk Group

Oracle Confidential
              Striping, Mirroring and Performance

          • Striping designed to meet
                • RDBMS I/O characteristics
                • General purpose files
          • Flexible file-based mirroring
                • External, Normal and High
          • Optimal performance                         ASM
                • No tuning

                                relative to

Oracle Confidential
                  Why You Should Care

              •       Reduced complexity thru automation
                      •   No I/O tuning, reshuffling data files
              •       Simplified solution stack
                      •   No finger pointing, 3rd party LVM/FS
              •       Increases utilization and database and
                      application uptime
                      •   No down-time for storage provisioning or migration
                      •   Managing storage pool vs. islands
              •       Single vendor cross-platform integrated solution
                      •   Bundled and tested as one solution
                      •   Same cross platform tools to install, configure and manage
              •       No additional cost!

Oracle Confidential
                      Taking It To The Next Level
                            ASM in 11gR2

Oracle Confidential
              Oracle Grid Infrastructure
              (ASM + Oracle Clusterware)

     • ASM and Oracle Clusterware integrated and installed in
       a single ‘Grid Infrastructure’ home
                      • Integrated installation, configuration and upgrade
                      • Installed using Oracle Universal Installer (OUI)
                         • Not a part of database install
                      • Option to minimally configure ASM and ACFS
                      • Automate creation of Oracle DB Homes on ACFS

Oracle Confidential
              ASM Configuration Assistant (ASMCA)
 • One      tool to initialize & manage • Manage ASM before db install
         * Disk Groups
                                        • Upgrade previous versions of ASM
         * Dynamic Volumes
                                          to the current version (11g R2)
         * ACFS file systems

Oracle Confidential
                 Extending ASM to Manage ALL Data

                      Database RAC              Application                 3rd Party FS

                            Automatic Storage Management (ASM)
                                                   ACFS Snapshot

                                                 ASM Cluster & Single
                           ASM Instance           Node File System
                           Oracle DB Files
                                                            Dynamic Volume Manager

                      Database Files            General Purpose Files
     ASM                                                      Dynamic Volumes
                      DB Datafiles
                       DB Datafiles
     Disk              Database files
                                                        ACFS FS                       3rd
                                                         Oracle                      Party
   Group                   OCR & Voting files             Bin                         FS

Oracle Confidential
              What is ASM Dynamic Volume Manager

                      OS    • A new cluster (and single host) volume
        /dev/asm/vol1-123     management service
                            • Standard disk device interface to clients
             ASM DG         • Loadable kernel driver
               +DATA/vol1   • Dynamic Volume is a volume file created
                              in an ASM disk group (new file type
                              • An OS device file is created automatically when
                                a dynamic volume is created
                            • Managed by SQL/ASMCMD and EM

Oracle Confidential
                      What is ASM Cluster File System
     • General purpose scalable file system
            • Journaling, extent based
            • Single node and cluster
            • POSIX, X/OPEN file system solution for UNIX/Linux
            • Windows file system solution for Windows platforms
     •    Accessible through NAS protocols (NFS, CIFS)
     •    Leverages ASM technology for volume mgt
     •    Integrated with Oracle Clusterware for cluster support
     •    Multi OS platform (Linux and Windows at initial release)
     •    Integrated with Oracle system mgt tools
            • Oracle installation and configuration
            • Enterprise Manager and ASM Storage mgt tools
            • Native OS File System Management tools

Oracle Confidential
                What are ACFS Snapshots
                         space efficient, “point in time” read-only
          • Dynamic, fast,
          copies of ACFS file system files
                      • Captures ASM FS file block/extent updates
          • An enabler for:
              • On-line, disk-based, file backup model using snapshots
              • Individual file recoveries
          • Up to 64 snapshot images per ASM file system
              • Policy based snapshots:
                   Schedule snapshots on an interval basis: every 5
              seconds, every 30 minutes, daily, …

          • Create an ACFS snapshots
                      • acfsutil snap create snap_name mountp

Oracle Confidential
             Leveraging the Power of ASM
                                      ACFS File System: /usr1
 • Even distribution of data          ACFS file A       Mirrored
                                      ACFS file B       Mirrored
 • Dynamic provisioning
    Dynamic volumes and               Linux: /dev/asm/vol1
    ACFS FS may be resized            Win: \\.\asm_dgname_volname
    leveraging ASM file resize
 % asmcmd volresize dga vol1 -s 50G        +DATA/dga/vol1

 • Can also use Enterprise
   Manager for management
   and threshold alerts                                             1

                                      Primary ASM File Extent
                                      Mirrored ASM file Extents

Oracle Confidential
                      Managing the Dymanic Volumes and
                               ACFS File System
                            Is Simple And Flexible

                1. Native Linux, UNIX, and Windows OS file system
                   commands and extensions
                2. acfsutil platform independent commands
                3. ASM Configuration Assistant (ASMCA)
                4. Enterprise Manager

Oracle Confidential
              An Example: Creating an ACFS File

 $ mkfs -t acfs -b 4k /dev/asm/volume1-62   ; Create fs on ASM volume

 $ su - root
 # mount -t acfs /dev/asm/volume1-62 /tmp/images
 # su – oracle_usr

 $ acfsutil registry -a /dev/asm/volume1-62 /tmp/images

 $ mount –t acfs –o all none none        ; Mount everything in the registry

 $ cd /tmp/images
 $ cp /home/my_images .

Oracle Confidential
              ACFS Use Cases

          • Oracle Home
                • Shared or node-local
                • Not Grid Infrastructure home
          • External files
          • Application binaries
          • Not an OS boot FS

Oracle Confidential
                      Oracle Database Files

                       ASM Core Enhancements

Oracle Confidential
                      ASM 11g Release 2 New Features
                              Database Files
          • All files on ASM                   • Improved Management
                • Oracle Cluster Registry,       • Full Featured ASMCMD
                  Voting Disk and SPFILE
                                                 • ASM File Access Control
          • Tunable Performance                  • ASM Disk Group Rename
                • Intelligent Data Placement     • Datafile to Disk Mapping
                                               • Installation &
                                                 Configuration mgt
                                                 • ASM Install & Configuration
                                                   Assistant (ASMCA)

Oracle Confidential
              OCR and Voting Disk on ASM

          • OCR is a regular ASM file
             • A new ASM file type
          • Voting Disk
             • Stored in selected ASM disks
             • ‘crsctl’ used to specify a disk group for Voting disks
             • ASM auto creates1/3/5 Voting Disks based on
               Ext/Normal/High redundancy on Failure Groups
             • Quorum failure group
          • ASM determines redundancy for OCR and Voting Disk
            based on disk group redundancy level
          • ASM SPFILE is also supported on ASM now

Oracle Confidential
              Intelligent Data Placement (IDP)

• Placement of files on high performance                     Hot Files
  regions of disk
      • 50% performance difference from outer to
        inner tracks
• Classify or mark an ASM file to be
      • Alter diskgroup dgname modify file ‘xxx’
        attributes HOT/COLD or
        based on a templates at creation time
      • Rebalance to migrate the ‘file’ to HOT/COLD
        IDP region
• IDP regions are dynamic                                          Disk Platter
• New V$ASMFILE recording IO stats
• The IDP feature better leveraged when ASM           Cold Files
  disks are whole disks

Oracle Confidential
              Complete ASMCMD Functionality
              A complete API for the system admin
          • Extending ASMCMD to manage:
             • ASM instance (startup/shutdown, init.ora, .)
             • Disk group, disk and failure group (create, mount,
               add, drop, …)
             • Attribute (list, set)
             • User/Group (add user, change password, …)
             • Template (list, add, alter drop)
             • Iostat and df
             • lsof: list files that are open by ASM
               lsod: list disks that are open by ASM
             • Dynamic Volume

Oracle Confidential
              Other Features

          • ASM File Access Control (ACL)
                • Introducing 3 classes of permissions:
                • owner, group, and other
          • ASM Disk Group Rename
          • Oracle File Mapping support (OFM)
                • View mapping of datafiles to physical devices
          • 4k sector size disk I/O support
                • Possible values are: 512b or 4096b (4k)

Oracle Confidential
                      In Summary…

Oracle Confidential
              One Integrated Solution for ALL Data

                      Simple Low Cost High Performance Always On-Line
                        Scalable   Optimal Utilization

                                                        ACFS Snapshot

         Un-structured                                                      One Management
             Data                                      ASM Cluster FS
                                  ASM Database files          &
              Structured                               Dynamic Volumes       One Install and
                 Data               Oracle Database
                                                       Oracle Clusterware
                                         RAC                                One Clusterware

                                     Cross Platform                          One Vendor for
                                 Linux, Windows, Solaris,                       Support
                                        HP-UX, AIX

Oracle Confidential
               Some ASM Reference Customers In Production

Oracle Confidential
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