HP StorageWorks 6105 Virtual Library System AF728A Merkblatt
Produktcode
AF728A
Positioning the HP Virtual Library Systems in the hierarchy
of data protection solutions
of data protection solutions
Figure 3. HP disk-assisted backup technologies: Each technology gives a different level of service at a different cost to
implement
implement
Data Protection Technologies
D2D
Small SAN &
LAN
Tape
(tape drives, tape automation)
Virtual Tape
SAN & LAN
•
Basic Backup and Recovery
Functions
Functions
•
Offsite vaulting
•
Best protection against malicious
intent (hackers & viruses)
intent (hackers & viruses)
•
Enhanced performance
•
Enhanced reliability
•
Seamless integration (Virtual tape)
•
“Instant” volume recovery
•
Leverages High Availability
investment
investment
Snap and Clone Technology
(Business Copy)
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DPM
LAN only
Windows
only
DPM= Data Protection Manger by Microsoft
Physical tape will always be the foundation of a robust data protection strategy offering low cost/GB
storage and off-site vaulting capabilities. However, in many cases an increase in backup performance
can be achieved by using disk-assisted backup techniques
Disk has the advantage of being random access and does not suffer the same performance
(repositioning) issues when backing up lots of small files. Additionally backup to disk does not
generally suffer from some of the error conditions that can cause backup jobs to tape to fail, for
example, no media in the media pool, media coming to the end of its useful life, tape jams, and
robotic failures.
(repositioning) issues when backing up lots of small files. Additionally backup to disk does not
generally suffer from some of the error conditions that can cause backup jobs to tape to fail, for
example, no media in the media pool, media coming to the end of its useful life, tape jams, and
robotic failures.
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The exception to this statement is when the disk arrays being backed up are very fast or the number of “streams” that are available to interleave
to a single tape is high. In these circumstances, when using very high-performance tape drives such as the HP StorageWorks Ultrium 960 (LTO3),
the backup to tape can be faster than the equivalent backup to disk.
the backup to tape can be faster than the equivalent backup to disk.
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