Title: Disaster Recovery Beyond Backup
1Disaster Recovery Beyond Backup
- Jason Phippen Director Product and Solutions
Marketing, EMEA
2Agenda
- Disaster Recovery Concepts
- Backup Last Line of Defence
- Enhancing Backup with Replication
- Remote Site Replication and Mirroring
- Clustering for Disaster Recovery
- Questions
3Disaster Recovery Concepts
- Recovery Point Objective (RPO)
- Point in time to which applications data must be
recovered to resume business transactions - Recovery Time Objective (RTO)
- Maximum elapsed time allowed before lack of
business function severely impacts an
organization
4Recovery Point Objective (RPO)
Replication
Tape Backup w/ Offsite Vaulting
- How much data loss can you endure?
5Recovery Time Objective (RTO)
Geographic Clustering
Recovery from Tape
- How much downtime can you endure?
-
6Choosing a Recovery Site
- Far Enough away
- How far away from the main site?
- What resources should it have?
- Site Strategies (Hot, Warm, Cold)
- Considerations
- Fault zones
- Flood plains
- Power grids
- Climate zones
- Locality relative to other sites (e.g., airport)
- Remote customers and employees
7Backup Your last line of Defense
- 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
8Enhancing Backup with Replication
9Replication-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
Site A
Site B
Replicate Backup Catalogs
Backup Master/Media Server
Backup Tape Copies Sent to Offsite
Backup Clients
10Remote Site Replication and Mirroring
11Replication and Mirroring
Asynchronous
Synchronous
- Key Requirements
- Must be far enough away
- No windows of data corruption at secondary
12Synchronous Replication
Primary Site
Secondary Site
- Strengths
- Maximum data currency (RPO)
- Data available immediately at secondary (RTO)
- Weaknesses
- Potential to impact application performance
- Data writes lag by network latency
- Write commit latency across nodes
13Asynchronous Replication
Primary Site
Secondary 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)
14Logical Volume ManagementRemote Mirroring
Primary Site
- Lower hardware costs
- Groups physical disks into logical volumes
- Hardware Independence,
- Greater IT productivity
- Simplified administration of heterogeneous
environments - Proactive management of applications
- Increased application ROI
Application
Volume Manager
- Can mirror over SAN distances
15Clustering for Disaster Recovery
16Clustering for Disaster Recovery
Campus / MAN Disaster Recovery
WAN Disaster Recovery
MAN
OR
Clustering , Replication
Clustering, Remote Mirroring
Clustering, Replication, Global Clustering
17Campus / MAN Disaster Recovery St-r-e-t-c-h
Cluster Over A SAN
Distance may vary depending upon infrastructure
18Global 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
- Single point of monitoring and administration
19Wide Area Availability
20VERITAS Uniquely Qualified (HA and DR)
Local
Multi-site
Availability Requirements
VERITAS Cluster Server
VERITAS Global Cluster Manager
Volume Manager/ Foundation Suite
VERITAS Volume Replicator
NetBackup/ Backup Exec
- NetBackup Vault - BMR / IDR
21Questions