Elements of Business Continuity Disaster Recovery Recover mission-critical technology and applications at an alternate site. Business Recovery Recover the business process at an alternate site. Workspace recovery. Contingency Planning To manage an external event that has far-reaching impact on the business. VERITAS focuses on Technology Recovery: Data and Applications

DR Solutions & Technology Tape Backup and Vaulting Replication Clustering

Overview of DR Technology Backup with Vaulting Replication Global Clustering SecsMinsHrsDays WksSecsMinsHrsDays Wks Recovery Point Recovery Time

Tape Backup & Vaulting SecsMinsHrsDays WksSecsMinsHrsDays Wks Recovery Point Recovery Time Backup with Vaulting Replication Global Clustering

Why Backup? Redundant systems replicate user errors, viruses and data corruption System or component redundancy (RAID, mirroring) cannot replace backup Backup tapes may represent the last valid copy of data Backups are your last line of defense against total data loss

Site Recovery from Backup Tape Backup with Offsite Vaulting RPO = Time of last good backup stored offsite RTO = Time required to recover from tape Transport tapes to recovery site Setup systems to receive data Restore from tape Typically 1-3 days between RPO and RTO SecsMinsHrsDays WksSecsMinsHrsDays Wks Days Wks Retrieve from Vault Set Up Systems Restore from Tape Wks Days Tape Backup Offsite Vaulting RPORTO

Tape Vaulting ALWAYS locate the vault offsite! Fireproof safes not sufficient META stat: 10 – 100 miles Gartner stat: 20 – 50 miles Duplicate tapes for both onsite & offsite use Consider an offsite vaulting service to move tapes daily Arcus/Iron Mountain, etc.

Typical Offsite Vaulting Process #1 – Duplicate backups #2 – Eject duplicate tapes from tape library and prepare for transport #3 – Transport tapes to the offsite vault #4 – Record where each tape is located within the vault and when each tape will expire #5 – When tapes expire, notify the offsite facility #6 – Transport expired tapes back onsite #7 – Load tapes back into the tape library

Bookkeeping headache Which tapes should be sent offsite? Which should be returned onsite? Error-prone manual process Will operators eject the right tapes? Difficult to duplicate tapes Which backups should be duplicated? Should duplicates be retained longer than originals? Coordination with offsite vendor How and when will the vendor be notified? Challenges of Offsite Vaulting

Challenges of VaultingNetBackup TM Vault Bookkeeping headache Identifies which tapes should be sent offsite and returned onsite Error-prone manual process Automatically ejects tapes for operators Difficult to duplicate tapes Policies automate tape duplication and retention Coordination with offsite vendor Pick list reports tell the vendor which tapes require transport VERITAS NetBackup TM Vault

Restore using locally- or SAN-attached tape drives Restore speeds over a LAN are slower Perform full backups as often as possible Incremental backups take longer to restore Leverage “bare metal” restore solutions Bypasses reinstall of OS Creates disk partitions automatically Server Recovery from Tape

VERITAS bare metal restore of Windows servers Available with VERITAS Backup Exec™ and VERITAS NetBackup™ Speeds server restores Wizard guarantees a foolproof recovery process Intelligent Disaster Recovery (IDR) Repair Hardware Collect all necessary media together Reload OS from CD-ROM or floppies REBOOT Reload Backup Software from CD-ROM Load recovery tape and restore system REBOOT Traditional Recovery Repair Hardware Collect all necessary media together Load recovery tape and restore system REBOOT With IDR REBOOT

VERITAS NetBackup TM Professional Comprehensive data protection for desktops and laptops Bare metal restore Recover desktops and laptops in the event of a disaster Create “bootable” CDs – restore OS, applications and unique data in less than an hour Low maintenance Automatic, transparent backups Standard profiles for groups of users Users restore their own files Minimal impact to users Single Instance Storage and Delta Block technologies ensure fast, efficient backups Extending DR to the Desktop

Desktop to Data Center Backup Solutions with VERITAS Large Server (UNIX/NT) NetBackup™ DataCenter NetBackup™ Vault Intelligent Disaster Recovery™ Midsize Server (UNIX/NT/NW) NetBackup BusinesServer™ Intelligent Disaster Recovery™ Workgroup Server (NT/NW) Backup Exec™ Intelligent Disaster Recovery™ Workstations (UNIX/NT) NetBackup™ Professional Bare Metal Restore

Backup Summary Points Backup is your last line of defense – protect all corporate data from the desktop to the data center Automated vault management will assure successful recovery while reducing tape handling costs Faster recovery times will be achieved with bare metal restore solutions

Replication & Mirroring Backup with Vaulting SecsMinsHrsDays WksSecsMinsHrsDays Wks Recovery Point Recovery Time Replication Global Clustering

Replication-enhanced Backup Replicating the Backup Catalog server Shave hours off a tape restore strategy No need to re-catalog tapes No need to rebuild the backup/restore server Tape restores can begin immediately Backup Tape Copies Sent to Offsite Site ASite B Backup Clients Backup Master/Media Server Replicate Backup Catalogs

HrsMinsSecs Periodic Replication Asynchronous Replication Sync Replication Replication & Mirroring Key Assumptions… Must be “far enough” away No windows of data corruption at secondary Topics in this section Replication Modes Synchronous Asynchronous Periodic Technology Options Volume Management Hardware Replication Host-based Replication

Synchronous Replication Strengths Maximum data currency (RPO) Data available immediately at secondary (RTO) Weaknesses Potential to impact performance Data writes lag by network latency Write commit latency across nodes Primary SiteSecondary Site

Asynchronous Replication Primary SiteSecondary Site Strengths Maximum performance May have less application impact Data available immediately at secondary (RTO) Weaknesses Secondary may lag primary (RPO) Potential for data corruption (not a weakness for VERITAS)

Periodic Replication Primary SiteSecondary Site Strengths Data available immediately at secondary (RTO) Weaknesses Data is old (RPO) Data is likely inconsistent Requires much more storage to preserve consistency Reconciling data sets hard/impossible

Redundancy Options Technology Alternatives Hardware Replication Host-based Replication Database Log Copy Volume Mirroring Synchronous Asynchronous Periodic Replication Modes

Works for both JBOD and RAID Logical Volume Management (Remote Mirroring) A Logical Volume Makes the Physical into Logical Looks and acts like a disk Can grow, relayout and move while online Is as reliable as needed Can stretch over SAN distances 10 km reach* SAN Fabric * Distance may vary depending upon environment

Disk Snapshots Point-in-time copy Immediate recoverability Protects against logical corruption Useful in conjunction with replication Fast resync with primary volume(s) Useful at DR site: Protection from logical corruption Offhost processing on DR equipment Primary Site Secondary Site Now Snapshot 10:00AM Now

Local and Remote Mirroring Logical Volume Mirror 1 m10 m1 km10 km100 km1000 km10,000 km Secondary Site Data Replication Primary Site

Hardware Replication Strength Operating System supportWeaknesses Eliminates choice among storage platforms Lock in Higher cost per MB/GB/TB Synchronous mode Field testing has shown substantial performance impact A volume manager is faster, cheaper, more flexible Asynchronous mode Data integrity concerns “Asynchronous” replication generally means “periodic” Periodic Old data Requires much more storage (5X – 7X is not uncommon)

Remote Target Disk Track Copy Sync Async/Periodic with Hardware Snapshots to preserve data integrity Requires additional storage (lots) Delivers less-current data (RPO) Now 8:00AM 10:00AM Local Staging Production Server

Host-based Replication Primary SiteSecondary Site Strengths Storage Independent (works on anything) Maximum flexibility Synchronous mode Less sensitive to latency and network failures Can leverage existing network (IP) Maximum performance Asynchronous mode Preserves data integrity in real-time mode Enables real-time replication over long distancesWeaknesses Uses system resources Limited operating system support

Database Replication Strength Acceptable for off-host processing Weaknesses Not comprehensive Management and maintenance complexity Asynchronous or Periodic only Secondary database will be different than primary Bottom Line: Not recommended as a DR solution

VERITAS Volume Replicator™ Cost Savings Supports ANY storage (EMC, HDS, Sun, LSI, IBM, …) Shared network support No specialized network gear required Protection Uncompromised Data Integrity (sync and async) No windows of data corruption Full database support (all modes) No distance limits Manageability Online management FastFailback Initialization options Online switch among modes

Replication Summary Points Volume Management in a SAN environment may satisfy data replication needs Evaluate any replication technology in the context replication modes (sync, async, periodic) and how those impact cost, performance and data loss (RPO) Host-based replication should be considered as a high performing, flexible, robust alternative to hardware replication

Clustering SecsMinsHrsDays WksSecsMinsHrsDays Wks Recovery Point Recovery Time Backup with Vaulting Replication Global Clustering

HrsSecs Global Clustering Manual Migration Mins Global Clustering Topics in this section Introduction to Clustering Application Service Groups Campus or Stretch Clustering Global Clustering Key Assumptions Assumes consistent data on disk at DR site (i.e., replication) Assumes local clustering

Principles of Local & Site HA How it works Identify fault Isolate problem Recovery quickly Address local HA first, then address site HA Respond to failure where appropriate

Application Failover Application must be “clusterable” Failover 1.Controlled shutdown of resources system 2.Change ownership to secondary server 3.Bring up resources on secondary server SAP NFS

Service Groups Database IP Address Volumes File System Network Card File System Network Card Database IP Address Physical Disk Physical Disk Physical Disk Volumes Physical Disk Physical Disk Physical Disk File System Network Card Database IP Address Physical Disk Physical Disk Physical Disk Volumes File System Network Card Physical Disk Physical Disk Physical Disk Volumes Physical Disk Physical Disk Physical Disk Volumes Physical Disk Physical Disk Physical Disk

Campus SAN Clustering Configuration Single cluster spanning sites Logical volume with mirror (plex) in both locations Logical Volume Stretch a cluster across two locations (0-10 km*) Site A Site B * Distance may vary depending upon environment

Replicated Data Clustering Hardware Replication Configuration Single cluster spanning sites Uses replication for redundant data Site A Site B < 50 km Host-based Replication Single cluster spanning multiple locations

VERITAS Cluster Server™ Automation Application level failover Workload management Open Solution Most extensive hardware, storage and application support Multi-O/S support: works the same across the enterprise Robust Technology Market leader Highly scalable Flexible failover policies

Global Clustering Extends local HA model to many sites Requires data replication Single point of monitoring and administration San FranciscoNew YorkLondonTokyo

Global Clustering Geographically dispersed sites linked by public carrier wide area network Each site aware of the configuration and state of all of the sites Direct site level migration in event of catastrophe Global Availability Management

Replication Failover Site Migration Global Clustering: Wide Area Availability

VERITAS Global Cluster Manager VERITAS Global Cluster Manager Management Monitors all clusters worldwide from Web-based console Directs replication across sites Automation “One-click” site failover DNS update to redirect client traffic Open solution Compatible with VERITAS and third-party replication solutions Supports leading server/storage hardware

Global Clustering Summary Points Cost and complexity are reduced through centralized management of DR environment Automating failover and replication policies eliminates human error Open systems approach allows choice of best-of-breed technologies

Technology Summary: Local to Multi-site VERITAS Cluster Server Volume Manager/ Foundation Suite™ NetBackup/ Backup Exec VERITAS Global Cluster Manager™ VERITAS Volume Replicator™ NetBackup Vault Local Multi-site Availability Requirements