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How to implement snapshots
recovering files that they're not authorized to access.
Integrate snapshots into the broader data protection scheme Evaluate the importance of your snapshots and determine the level of data protection that is appropriate for your snapshot data. RAID 5 or even RAID 6 protection is usually adequate in the snapshot storage system itself, while some organizations take it... More...
How to implement disk-to-disk backups
as backup targets. Storage space is finite, which can limit the allowable retention period for data. Data reduction technologies like data deduplication and delta differencing can dramatically extend the effective storage capacity. Also, indexing and search are can be valuable when rapid file organization and location are needed. Below are a series of best...
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How to improve tape backup performance and reliability
Use data backup tools to locate bottlenecks Experts point to a growing number of backup and data protection management tools that can analyze backup traffic and highlight potential problem areas. For example, you might identify tape as your data bottleneck and spend significant capital dollars for upgrades and other changes -- only to discover that the problem was... More... FAQ's
Avoid data loss with proper tape storage handling procedures
Improper tape storage handling frequently contributes to data loss. Dust, sudden impacts, and heat are just a few of the things that can render a tape unreadable. Curtis Breville, founder and president of geniusTek and the writer of the Web site AskMrStorage.com, discusses tape handling best...
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How about when doing target data deduplication on the virtual tape library (VTL) or backup appliance? Is there a similar performance impact?
has a little bit different performance impact. The knock on target-based data deduplication is that you aren't really reducing the amount of data you are sending over the network. So you are still sending the full amount of data over the network every time you do a backup. You are reducing the amount of data...
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There are also concerns about data loss due to hash collisions. How have manufacturers addressed that issue today?
and it said that the only way you can be absolutely sure that each chunk of data is completely unique is to take each new chunk of data and compare it to every other chunk of data stored. It also said that's really not practical because if you do that, it creates a huge time delay. So, the compromise is to use a hashing...
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