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Related Best Practices
How to implement snapshots
(RPOs) by supporting more frequent recovery points. When properly implemented, snapshot data can be used to restore lost files or recover from more substantial data loss. Features like data deduplication are also appearing in snapshots to reduce disk storage requirements, allowing for many more snapshots and longer retention periods. Below are a series...
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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
The role of tape is clearly changing, shifting away from everyday data backup and moving toward deep archiving or offsite storage, but tape is still an important element of many data centers. Storage professionals must contend with concerns about tape performance and reliability that have remained almost unchanged for decades. In...
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FAQ's
Do you think data should be deduplicated while the backup is occurring or after it is complete?
to this. There's the post-processing architecture that accepts all the data incoming and then stores the data on disk. Then, there is the more common in-line architecture.
Personally, I'm more in the post-processing camp right now. I'm trying to fully understand the benefits of doing it in-line. My concern at the... More...
What happens if you fill up a storage system with deduplicated data and it needs to grow?
This is really the Achilles heel of data deduplication right now.
If you have a lot of growth and wind up filling up an entire system, most products on the market today don't have the ability to add another system behind it. So, you have to invest in a new system. And that leads to... More...
What type of data reduction ratios should you realistically expect using deduplication?
There are two ways you can look at it. Most people are looking at data deduplication in conjunction with backup; backup appliances performing deduplication or even virtual tape libraries (VTL). So, looking at it in that context, you'll hear advertised ratios of anywhere from 10 to 500X.
But... More... |