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Backup & Archive - Coggle Diagram
Backup &
Archive
Purpose
Disaster Recovery
Operational Recovery
Archive
Granularity
Full
Incremental
:small_red_triangle: Since Last full
OR
Incremental Backup
Less Size & Backup Time
Longer Restore Time
Cumulative
(Differential)
:small_red_triangle: Since Last
Full
Backup
More Size & Backup Time
Less Restore Time
Methods
Hot (Online)
Cold (Offline)
Architecture
Backup Client
Send data to storage node
Backup Server
Initiate backup
Manage Backup Operation
Maintains Backup Catalog
Storage Node
Write data to backup device
Topology
Direct Attached Backup
LAN-based Backup
SAN-based Backup
Implementations
Server-based
Serverless
NDMP 2-way
NDMP 3-way
Targets
Tape
Low Cost
Sequential Access
Streaming
Slow
War & Tear
Backhitching
Disks
Higer Performance
Random Access
Simultaneous Access
Reliable
Virtual Tapes
Disks Presented as Tape to software
Better Performance
Random Access
Reliable
Data
Deduplication
File-level
Subfile
Fixed-length block
Variable-length Segment
Archive
Online
Directly Connected
Data Accessible
Nearline
Connected
Must mount to access
Offline
Not Directly Connected
Manual Intervention to access