HP D2D Manual de usuario Pagina 25
- Pagina / 131
- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
25
VTL best practices
Summary of best practices
Tape drive emulation types have no effect on performance or functionality.
Configuring multiple tape drives per library enables multi-streaming operation per library for good aggregate
performance.
Do not exceed the recommended maximum concurrent backup streams per library and appliance if maximum
performance is required. See Appendix A.
Target the backup jobs to run simultaneously across multiple drives within the library and across multiple
libraries.
Create multiple libraries on the larger D2D appliances to achieve best aggregate performance.
– Individual libraries for backing up larger servers
– Libraries for consolidated backups of smaller servers
– Separate libraries by data type if the best trade-off between deduplication ratio and performance is needed
Cartridge capacities should be set either to allow a full backup to fit on one cartridge or to match the physical
tape size for offload (whichever is the smaller)
Use a block size of 256KB or greater. For HP Data Protector and EMC Networker software a block size of
512 KB has been found to provide the best deduplication ratio and performance balance.
Disable the backup application verify pass for best performance.
Remember that virtual cartridges cost nothing and use up very little space overhead. This allows you to assign
backup jobs their own cartridges rather than appending very many small backups to a single piece of virtual
media. This will provide performance benefits during backup and with housekeeping.
Define slot counts to match required retention policy. The D2DBS, ESL and EML virtual library emulations can
have a large number of configurable slots.
Design backup policies to overwrite media so that space is not lost to a large expired media pool and media
does not have different retention periods.
All backups within a policy can remain on the D2D (there is no need to export or delete cartridges) as there is
very little penalty in keeping multiple full backups in a deduping library.
Recommend that full backup jobs are targeted to specific cartridges, sized appropriately.
Reduce the number of appends by specifying separate cartridges for each incremental backup.
Tape library emulation
Emulation types
The HP D2D Backup Systems can emulate several types of physical HP Tape Library device; the maximum
number of drives and cartridge slots is defined by the type of library configured.
Performance however is not related to library emulation other than in the respect of the ability to configure
multiple drives per library and thus enable multiple simultaneous backup streams (multi-streaming operation).
To achieve the best performance of the larger D2D appliances more than one virtual library will be required to
meet the multi-stream needs. For G1 products, a single virtual library is restricted to a maximum of four virtual
drives. As an example, an HP D2D4112 G1 appliance would require at least 10 streams running in parallel to
approach maximum aggregate throughput and so should be configured with a minimum of three virtual libraries,
each with four drives running in parallel, if achieving maximum performance is a critical factor.
For G2 products with 2.1.X or later software a more flexible emulation strategy is supported. The appliance is
provided with a drive pool and these can be allocated to libraries in a flexible manner and so more than 4
drives per library can be configured up to a maximum as defined by the library emulation type. The number of
- HP D2D Backup Systems 1
- Replication implementations 1
- Abstract 4
- Related products 4
- Executive summary 5
- HP StoreOnce Technology 7
- Housekeeping overview 8
- Best practice 9
- Multi-stream vs. Multiplex 9
- Use multiple backup streams 9
- Network configuration 11
- Single Port mode 12
- Dual Port mode 13
- Backup server networking 18
- Fibre Channel configuration 19
- Direct Attach (Private Loop) 20
- StoreOnce Backup systems 23
- VTL best practices 25
- D2D NAS best practices 30
- CIFS share authentication 38
- Performance tools 44
- D2D Replication 48
- Replication usage models 49
- Many to One configuration 50
- What to replicate 52
- Concurrent replication jobs 54
- WAN link sizing 54
- Active/Passive 57
- Active/Active 57
- Many to One 58
- Source Appliance Permissions 66
- Replication Monitoring 67
- Terminology 71
- Tape Offload 75
- Summary of Best Practices 78
- Appendix A 80
- Key reference information 80
- Using V2.1 code and higher 104
- Site E, data center 104
- Offload to Tape requirement 106
- Avoiding bad practices 107
- Appendix C 108
- Write Device 113
- Read Device 113
- Appendix D 116
- 1.1.01 software 116
- No migration time required 116
- ProLiant 119
Relacionado con productos y manuales para Redes HP D2D
Redes HP AD465A Manual de usuario
(18 paginas)
(18 paginas)
Redes HP Pro/10 Manual de usuario
(35 paginas)
(35 paginas)
Redes HP 100BaseT Guía de usuario
(157 paginas)
(157 paginas)
Redes HP AdvanceStack Router 230 Manual de instalación
(144 paginas)
(144 paginas)
Redes HP STORAGEWORKS e1200-160 Manual de usuario
(200 paginas)
(200 paginas)
Redes HP Cloud OS for Moonshot Manual de instalación
(44 paginas)
(44 paginas)
Redes HP M111 Manual de usuario
(88 paginas)
(88 paginas)
Redes HP iSCSI Manual de usuario
(15 paginas)
(15 paginas)
Redes HP RX2600 Manual de usuario
(84 paginas)
(84 paginas)
Redes HP 382 Manual de usuario
(162 paginas)
(162 paginas)
Redes HP tx2-1305au Guía de usuario
(14 paginas)
(14 paginas)
Redes HP E5000 Guía de inicio rápido
(2 paginas)
(2 paginas)
Redes HP 10BASE-T Guía de usuario
(136 paginas)
(136 paginas)
Redes HP 3.1.X Manual de usuario
(307 paginas)
(307 paginas)
Redes HP 24S Guía de usuario
(102 paginas)
(102 paginas)
Redes HP WL210 Guía de instalación
(76 paginas)
(76 paginas)
Redes HP sa2250 Guía de inicio rápido
(26 paginas)
(26 paginas)
Philips 017266693 manuals
Owner’s manuals and user’s guides for Outdoor lighting Philips 017266693.
We providing 1 pdf manuals Philips 017266693 for download free by document types: Datasheet
Comentarios a estos manuales