High Availability and Data Protection with Dell PowerScale Scale-Out NAS
Executive summary
High availability and reliability at the petabyte scale
High availability with OneFS
OneFS fault tolerance
High availability and data protection strategies
Summary
OneFS glossary
Overview: High availability and data protection strategies
OneFS high availability and data protection suite
Connection load balancing and failover—SmartConnect
Snapshots
Writable snapshots
SmartDedupe
Small File Storage Efficiency
Inline data reduction
Replication
Archiving and data security
CloudPools
SmartLock
Data Encryption at Rest
Audit
OneFS hardening
Secure Remote Services and SupportAssist
File filtering
Nearline, VTL, and tape backup
FC backup accelerator card
Backup from snapshots
Parallel streams
NDMP
Direct NDMP model
Remote NDMP model
Certified backup applications
OneFS high availability and data protection suite
OneFS high availability and data protection suite
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Data Protection: Described in detail earlier, at the heart of OneFS is FlexProtect. This unique, software-based data protection scheme allows differing levels of protection to be applied in real time down to a per-file granularity, for the entire file system, or at any level in between.
Redundancy: As we have seen, the Dell PowerScale clustered architecture is designed from the ground-up to support the following availability goals:
- No single point of failure
- Unparalleled levels of data protection in the industry
- Tolerance for multi-failure scenarios
- Fully distributed single file system
- Proactive failure detection and preemptive, fast drive rebuilds
- Flexible data protection
- Fully journaled file system
- High transient availability
- Nondisruptive upgrades and operations
The following diagram illustrates how the core components of the PowerScale data protection portfolio align with the notion of an availability and protection continuum and associated recovery objectives.
Figure 13. OneFS data protection technology alignment with protection continuum