HP StoreOnce D2D4324 HP StoreOnce Backup System Concepts and Configuration Gui - Page 5

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 Contents 5