DAS backup solutions are the simplest data protection solutions. If your business has some or all of these characteristics, you may benefit from a DAS solution:
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Does not need to support online business-critical operations |
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Will be well served by daily or weekly backups |
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Maintains a small number of networked servers (fewer than 5) |
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Supports a single operating system |
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Wants plug-and-play capability |
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Needs simple and effective manageability |
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Is acquisition cost conscious |
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Is focused on storage capacity, performance, reliability, and durability |
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DAS technologies |
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DAS backup solutions offer very cost-effective data protection for small multi-server environments using standalone tape drives. Your choice of tape technology depends on how much storage capacity you need (without data compression) and how quickly you need to back up your data:
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HP DAT: 12 to 36 GB |
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HP DLT VS: 40 GB |
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HP SDLT: 160 GB |
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HP Ultrium (LTO): 100 to 200 GB |
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Regardless of which you select, all of these technologies are well established and ensure that your data is backed up and restored reliably. Media for all four of these technologies is also readily available, durable, and cost-effective.
In a typical implementation, the tape drive connects directly to the server or workstation whose data you want to protect. The backup management software also resides on the server to simplify the setup. If you have a larger system that requires more than one tape to back up, you can choose to deploy an autoloader or tape library to automate the backup process. Autoloaders and libraries bring significant resource savings and reliability improvements:
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Manage backups from a single management console |
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Maintain all of your media in a single device |
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Simplify the entire backup process |
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Considerations |
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As you consider DAS as a solution for your business, keep the following in mind:
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A standalone tape drive relies on a person to insert the tape media each day or week as your business demands. |
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Environments that require a higher tape capacity and automated backup benefit from an autoloader |
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As the number of servers in your company grows to meet new business demands, so will the complexity and cost of administering your backup solution, along with your capacity requirements. Keep business growth in mind as you evaluate the capacity of the different tape technologies. |
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Because tape backup solutions back up data less frequently (daily or even weekly), they are less suitable for businesses that need to restore critical data from a point of loss. |
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Tape backup solutions can be slower than other options, so if you have a significant amount of data to back up, you may have a large backup window or may have to plan to devote some of your network traffic to backup tasks during standard working hours. |
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An HP DAS solution |
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An HP DAS solution includes a combination of these technologies (exact products may differ within product families):
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Tape Drives |
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Autoloaders |
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DAT 24
DAT 40
DAT 72
DLT VS80
SDLT 320
Ultrium 215
Ultrium 230
Ultrium 460
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DAT 40x6
DAT 72x6
1/8 Autoloaders
SSL1016 Autoloader
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| HP workstations and servers |
HP Workstations
HP ProLiant servers
HP 9000 servers
HP Alpha servers
HP Integrity servers |
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» Next: LAN-based backup solutions
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