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62 Cards in this Set
- Front
- Back
Local Business Continuity Framework
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Platform
Backup/Recovery Information Repurpose |
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Remote Information Business Continuity Framework (more complex)
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Remote Information
Remote Processing Multi-site |
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Platform
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The implementation of robust hardware and software technology, high levels of performance and availability, no single point of failure.
o Flexible o Scalable o Manageable o Reconfigurable o Multiple oConnectivity Options |
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Backup/Recovery
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Ensuring the ability to backup and recover info w/ minimal impact
o Non-disruptive backups o Instant Restore o Consistent across applications o Mask Complexity |
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Information Repurposing
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Ability to reuse production data w/o impacting performance
o Repeatable o Affordable o All aspects of enterprise |
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Remote Information
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Ability to assure data availability at a remote location
o Zero data loss to seconds to hours o A yard, a mile, a thousand miles o Transport and restore o Electronic data synchronization Differed or periodic Real time |
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Remote Processing
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Ensure availability of appropriate servers and networking to assume application restart at remote location
o Build your own o Provider |
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Multi-site
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Ensure data availability with minimal performance impact at remote location
o Highest availability o Flexibility o Automated management o No single point of failure |
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Raw Device
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o Special device file identifies volume directly
o Any process that can open the device file can read and write any specific volume o Virtual disk devices that looks like a disk device o Can be mirror, spanned, striped, and moved o Can only be opened as a single direct-access file o Performing I/O directly can eliminate File System overhead |
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File Systems
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o Provide syscalls to create/access files residing on disk
o OS file systems files virtualizes physical disk storage as a collection of logical files o Hierarchical structure of files and directories o Consists of five components Set of inode storage cells • (files set aside when file system is made) Set of scattered super blocks • contain info on the file system characteristics, several scattered copies are maintained Map of disk blocks in the file system Block usage summary Set of data block |
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File Systems
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UFS, Journal Filing System (IBM), Enhanced Journaling Filing System JFS2 (IBM), VxFS (Veritas), Veritas Quick for i/o databases, Windows FAT32, FAT16, NTFS.
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UFS
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Conceptually viewed as inverted tree structure
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Journaling File System (IBM)
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o JFS uses database-like journaling technique
o Only complete updates are applied after a crash o Updates are first built in a journal log o Max system size: 1TB o Max file size: 64GB |
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Enhanced Journaling File System (JFS2, also IBM)
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o Designed to support large files and large files systems
o 64bit Functionality o Max system size: 16TB o Max file size: 16TB |
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VxFS (Veritas)
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o Installable file system
o Uses intent logging to provide quick recovery after failure o Extendable w/o unmounting o Extent based allocation |
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Veritas Quick I/O for Databases
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o Nearly equal to that of raw devices
o References real file using extended name |
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Windows
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o FAT16/32
Often uses to support duel boot environment o NTFS FAT32 + MORE AWESOME Win2k and up File and directory level security Disk compression & quotas Encryption |
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Hierarchical Database
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Data representation based on parent-child (tree structure)
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Network database model
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Representation where data entities are on a lattice structure
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Relational database model
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Represented as two dimensional tables that relate by common attributes
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Object-Oriented database model
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Representation of object attributes and behavior
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Hybrid data model
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Mix of relational and object-oriented
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Database Applications
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OLTP and DSS
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OLTP (Online Transaction Processing)
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o Used to manage and modify data
o Many small & random reads and writes |
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• DSS (Decision Support System)
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o OLAP (Online Application Processing)
o Long reads during business hours o Long writes during refresh o Sequential reads and writes |
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Database Backup Types
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Cold Backup (Offline)
Hot Backup (online)o Requires DBMS capability to perform backup while the db is running Point-in-time Backup o Requires EMC consistency technology (ECA, PPath) |
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Statement of Work
(Implementation Collateral) |
o Legal document between EMC and customer
o Defines scope Derived from the design Outlines the work effort |
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Configuration Guide
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o Solution design
o Steps to meet customer objectives |
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• Test and Acceptance plan
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o Contains test cases that must be successfully executed
o Defines customer’s exit criteria |
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Implementation process
(DPIIT) |
1. Data collection
2. Preparation 3. Installation 4. Implementation 5. Testation |
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Data collection
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• EMC Grab
• EMC Reports (Windows) • HEAT (Host Environment Analysis Tool) • Ad Hoc Commands/Scripts • Change Tracker (DeltaMark) |
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Change Tracker (DeltaMark)
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• Licensed through the symchg facility DeltaMark
• Interval length should be set to half the RPO or to the desired cycle time (nothing lower than 10min) |
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SUM Reports (Change Tracker)
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i. Track changes from the point in time the DeltaMark bitmap was marked and gives a running total
ii. Reports trend up ( exponential graph ) |
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DELTA Reports (Change Tracker)
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i. Track changes that have occurred since the last interval
ii. Reports specific intervals ( many peaks ) |
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Preparation
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Configuration (Symm Configure (Preview, Prepare, Commit))
o Install additional file sets, patches or service packs o Establish application baseline o Change device attributes to map to solution o Zone and mask device for host access o Configure additional devices |
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Changes to the current environment
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o Configuration manager
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Application considerations
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o Current level of OS
o Data layout o A metric that determines if an application is running well o Understanding application characteristics Start and stop procedures Support for online backups Support for consistency options |
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Reconfirm the design
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o Using the real-time data, verify the solurtion
Expected behavior Installation impact/benefits Recovery/return home behavior |
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Configuration Manager
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preview, prepare and commit
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Installation
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• Licensing consideration
• Symlmf (licensing command) • License Database: symapiliceneses.dat |
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Implementation
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Customization, Automation, Scheduling, Notification
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Automation
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RM
Custom Scripts |
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Scheduling
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PIT
CRON |
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Notification
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Logs
SNMP |
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Customization
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SymQOS
SymACL |
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Quality of Service
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Allows users to adjust the data transfer pace for Timefinder and SRDF applications
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Testing
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• Post implementation tasks
o Verify the implementation o Diagnostics and troubleshooting • Customer acceptance and signoff |
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EMC has standards to which implementers must adhere (MD5 Checksum)
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• Each command line parameter listed should have a short description with it
• Each script should be written with re-usability in mind • Each time a script is updated, it should be reviewed for accuracy, robustness and to confirm it follows documented standards • Write all scripts to use standard in/out error • Report when something goes wrong, not when it works • Small procedures are easier to understand and maintain |
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The name of each script must reflect its use
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sh for Bourne shell
• .bat for Windows batch • .pl for Perl scripts • .cgi for Common Gateway Interface |
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Configuration/initialization files
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Extension must be one of the following
o .conf o .ini o .txt • Remarks must start with a # |
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MD5 checksums
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• Generated when script has been accepted
• Old and new checksums are compared to determine if any changes were made to the script |
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Initial BCV pairings
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• With the –opt option, Timefinder attempts to
o Pair devices on separate disk adapters o Pair devices that are on the same disk adapter but are on different SCSI interfaces o Pair devices that may be on the same DA and SCSI interface but on a separate spindle • -exact option o Pairs BCVs in the exact order in which the devices were added to the device group |
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TimeFinder Exchange Integration Module (TEIM)
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streamlines the collective TimeFinder/Mirror actions required in backup operations of the storage enterprise for Exchange servers
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TimeFinder Integration Module for SQL Server (TSIM)
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integrates and automates the features of TimeFinder/Mirror, Solutions Enabler (SYMCLI) and tools supplied with Microsoft SQL Server products.
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Filesystem and database consistency split
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• ECA
o –consistant • PowerPath o –ppath Stdevs (BCVs/Mirrors) ?? Srcdevs (Clone/Snap) ?? o –rdb database type ( Oracle, SQL, IBM, etc) o –VxFS |
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What is symqos?
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Provides quality of service (QOS) controls on specific devices.
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What is symacl?
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Sets up or updates Symmetrix Access Control Information.
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Data Migration Tools
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Windows (xcopy, robocopy, open migrator)
UNIX (rsync, volume managers AIX migratepv, HP pvmove, vertias, vxexac). SRDF |
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What is migratepv?
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AIX Data Migration Tool
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What is pvmove?
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HP-UX Data Migration Tool
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What is vxevac?
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Veritas Data Migration Tool.
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Open Replicator Technology
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Controls and Remote refer to the control of Open Replicator oeprations, not the direction of the copy.
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