HP StorageWorks 6105 Virtual Library System AF728A 产品宣传页
产品代码
AF728A
HP offers several disk-assisted backup solutions:
• Virtual tape
• Disk-to-disk, or D2D (also known as advanced backup to disk within Storage Data Protector
• Disk-to-disk, or D2D (also known as advanced backup to disk within Storage Data Protector
software)
• HP StorageWorks Data Protection Storage Server, which is based on Microsoft Data Protection
Manager
• Snap and clone technology
HP virtual tape allows users to have all the advantages of backup to disk without having to change
existing backup techniques. An HP Virtual Library System integrates seamlessly into existing
SAN-based backup infrastructure because it responds to backup and recovery software as though
it actually was physical tape. The primary purpose of virtual tape is to accelerate slow SAN-based
backups by allowing as many parallel backup streams to be configured as necessary to back up the
slow infrastructure (see scenario examples). Of all the SATA disk–assisted solutions previously shown,
virtual tape is by far the most versatile because it is simple to implement, can be implemented into any
heterogeneous SAN, is scalable, and is easily modified as your infrastructure changes.
existing backup techniques. An HP Virtual Library System integrates seamlessly into existing
SAN-based backup infrastructure because it responds to backup and recovery software as though
it actually was physical tape. The primary purpose of virtual tape is to accelerate slow SAN-based
backups by allowing as many parallel backup streams to be configured as necessary to back up the
slow infrastructure (see scenario examples). Of all the SATA disk–assisted solutions previously shown,
virtual tape is by far the most versatile because it is simple to implement, can be implemented into any
heterogeneous SAN, is scalable, and is easily modified as your infrastructure changes.
D2D again uses low-cost disk arrays (or older disk arrays being put to extended use) and relies on the
backup software specifically supporting write to disk as part of the backup process. D2D is ideal for
LAN-based disk-assisted backup where a single file system can be maintained on the low-cost disk
array and written to by the backup server. D2D could also be used for small SANs (fewer than five
servers), but in a SAN environment each server in your system has to have a LUN created on the
shared disk array, and that means managing multiple file systems on the shared disk array. This can
be time-consuming and confusing in some circumstances, which makes it impractical when the number
of SAN servers is higher than five.
backup software specifically supporting write to disk as part of the backup process. D2D is ideal for
LAN-based disk-assisted backup where a single file system can be maintained on the low-cost disk
array and written to by the backup server. D2D could also be used for small SANs (fewer than five
servers), but in a SAN environment each server in your system has to have a LUN created on the
shared disk array, and that means managing multiple file systems on the shared disk array. This can
be time-consuming and confusing in some circumstances, which makes it impractical when the number
of SAN servers is higher than five.
HP StorageWorks Data Protection Storage Server uses HP hardware running Microsoft Data
Protection manager and allows almost continuous backup from LAN-connected servers running
Windows® operating systems.
Protection manager and allows almost continuous backup from LAN-connected servers running
Windows® operating systems.
Finally, for the most business-critical data where instant recovery is necessary, snap and clone
technologies based in the disk arrays can provide complete images of the data that can be brought
online very quickly. These solutions are complete clones/snapshots requiring high-volume disk
storage, so they tend to be more expensive than either virtual tape or advanced backup to disk.
technologies based in the disk arrays can provide complete images of the data that can be brought
online very quickly. These solutions are complete clones/snapshots requiring high-volume disk
storage, so they tend to be more expensive than either virtual tape or advanced backup to disk.
For more information on the comparison between these types of data protection technologies, see
Appendix A.
Appendix A.
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