HP StoreOnce Backup System Concepts and Configuration Guidelines (BB877-90913, November 2013)

Maximum number of hosts per NFS share ............................................................................72
CIFS share authentication....................................................................................................72
Backup application configuration..............................................................................................72
Backup file size..................................................................................................................73
Disk space pre-allocation....................................................................................................74
Block/transfer size.............................................................................................................74
Concurrent operations........................................................................................................74
Buffering...........................................................................................................................74
Overwrite versus append....................................................................................................74
Compression and encryption...............................................................................................75
Verify...............................................................................................................................75
Synthetic full backups.........................................................................................................75
Summary of NAS best practices...............................................................................................75
11 Replication.............................................................................................77
What is replication?................................................................................................................77
StoreOnce VTL and NAS replication overview............................................................................78
Replication usage models (VTL and NAS)..................................................................................78
What to replicate...................................................................................................................81
Appliance library and share replication fan in/fan out................................................................82
Concurrent replication jobs......................................................................................................82
Apparent replication throughput...............................................................................................82
What actually happens in replication?......................................................................................83
Limiting replication concurrency................................................................................................83
WAN link sizing....................................................................................................................83
Seeding and why it is required.................................................................................................84
Replication models and seeding..........................................................................................85
Controlling Replication ...........................................................................................................86
Replication blackout windows..............................................................................................87
Replication bandwidth limiting.............................................................................................87
Source appliance permissions..............................................................................................88
12 Seeding methods in more detail................................................................89
Seeding over a WAN link.......................................................................................................89
Co-location (seed over LAN)....................................................................................................92
Floating StoreOnce seeding.....................................................................................................94
Seeding using physical tape or portable disk drive......................................................................95
13 Implementing replication with the HP B6200 Backup system.........................98
Active/Passive and Active/Active configurations.........................................................................98
Many to One configurations..................................................................................................102
Implementing floating StoreOnce seeding...........................................................................102
Balancing Many-to-One replication....................................................................................103
Replication and load balancing.........................................................................................104
14 Housekeeping......................................................................................106
Housekeeping Blackout window.............................................................................................106
Tuning housekeeping using the StoreOnce GUI.........................................................................106
15 Tape Offload.......................................................................................109
Terminology.........................................................................................................................109
Direct Tape Offload.........................................................................................................109
Backup application Tape Offload/Copy from StoreOnce Backup system.................................109
Backup application Mirrored Backup from Data Source.........................................................109
Tape Offload/Copy from StoreOnce Backup system versus Mirrored Backup from Data Source...110
When is Tape Offload required?............................................................................................110
Catalyst device types........................................................................................................110
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