HP 12000 HP VLS Solutions Guide Design Guidelines for Virtual Library Systems - Page 9

Concepts, Disk-based Backup and Virtual Tape Libraries, Problems Addressed by Virtual Tape Libraries - storage

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2 Concepts Disk-based Backup and Virtual Tape Libraries Problems Addressed by Virtual Tape Libraries You can optimize your backup environment with VLS and D2D if you are: • Not meeting backup windows due to slow servers. • Not consistently streaming your tape drives. • Dealing with restore problems caused by interleaving. • Performing many restores (such as single file or small database restores). • Backing up data that has a short life. • Having issues with backup reliability. • Using snapshot and clone technology for non-critical data (which makes the storage inappropriately expensive for the nature of the data). • Looking to deemphasize tape in your environment. Bear in mind that removable media remains valuable in its own right and for particular purposes such as site protection and protection from malicious attack (for example, viruses and hackers), data distribution, data copy, archive, and regulatory compliance. • Improving media management. You can keep incremental backups on virtual tape and send full backups straight to tape. Integration of Disk in Data Protection Processes Globalization, 24x7 environments, and consolidation are driving more rigorous data protection requirements. To address these requirements, disk is frequently introduced into the backup process. In disk solutions, data is backed up from an application server (disk) over a dedicated SAN to a disk-based system and from there to a traditional tape library. This provides enhanced solutions for slow servers, single-file restores, and perishable data. One of the particular benefits of the VLS and D2D is that they make a disk array look to your backup server like a tape library. Implementation requires no new software and no significant redesign of your backup processes. On the VLS300 and VLS12000 Gateways, because they are attached to an EVA, the existing Fibre Channel infrastructure and management framework is used and there is no new management server required. NOTE: Tape holds its value for ease of vaulting, economical long-term retention, and immutability (with WORM). It is the last step in your data's storage cycle. Where Virtual Tape Fits in the Big Picture Virtual libraries are not necessarily the only piece of your backup plans, but they can be an integral piece of a successful solution. Figure 1 (page 10) illustrates the common backup technologies and their relative benefits and costs. Disk-based Backup and Virtual Tape Libraries 9

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2 Concepts
Disk-based Backup and Virtual Tape Libraries
Problems Addressed by Virtual Tape Libraries
You can optimize your backup environment with VLS and D2D if you are:
•
Not meeting backup windows due to slow servers.
•
Not consistently streaming your tape drives.
•
Dealing with restore problems caused by interleaving.
•
Performing many restores (such as single file or small database restores).
•
Backing up data that has a short life.
•
Having issues with backup reliability.
•
Using snapshot and clone technology for non-critical data (which makes the storage
inappropriately expensive for the nature of the data).
•
Looking to deemphasize tape in your environment. Bear in mind that removable media remains
valuable in its own right and for particular purposes such as site protection and protection
from malicious attack (for example, viruses and hackers), data distribution, data copy, archive,
and regulatory compliance.
•
Improving media management. You can keep incremental backups on virtual tape and send
full backups straight to tape.
Integration of Disk in Data Protection Processes
Globalization, 24x7 environments, and consolidation are driving more rigorous data protection
requirements. To address these requirements, disk is frequently introduced into the backup process.
In disk solutions, data is backed up from an application server (disk) over a dedicated SAN to a
disk-based system and from there to a traditional tape library. This provides enhanced solutions
for slow servers, single-file restores, and perishable data.
One of the particular benefits of the VLS and D2D is that they make a disk array look to your
backup server like a tape library. Implementation requires no new software and no significant
redesign of your backup processes. On the VLS300 and VLS12000 Gateways, because they are
attached to an EVA, the existing Fibre Channel infrastructure and management framework is used
and there is no new management server required.
NOTE:
Tape holds its value for ease of vaulting, economical long-term retention, and immutability
(with WORM). It is the last step in your data’s storage cycle.
Where Virtual Tape Fits in the Big Picture
Virtual libraries are not necessarily the only piece of your backup plans, but they can be an integral
piece of a successful solution.
Figure 1 (page 10)
illustrates the common backup technologies and
their relative benefits and costs.
Disk-based Backup and Virtual Tape Libraries
9