Tiered data storage is utilized by many data storage administrators and IT shops. Storage tiering has numerous benefits. It can not only lower operational costs, but improve performance by opening up more space on tier 1 storage. According to a spring 2010 Storage magazine Snapshot survey, 50% of respondents said they currently used a form of tiered storage in their environments. In addition, 63% of those not currently using tiered storage strategies said they expect to in the future. The survey also found storage tiering becoming more automated, with 32% using an automation tool for tiered storage.
But before you implement tiered data storage in your storage system, you should examine all your options and assess your environment. To help you better understand tiered data storage and its benefits, we've collected our top four articles on storage tiering. Explore your dynamic storage tiering options and what products you can choose from. Take a look at sub-LUN tiering and the factors to consider before implementing it in your environment. Listen to a podcast on the importance of data migration in tiered storage. And, lastly, see how auto-tiering software might increase the adoption of solid-state drives (SSDs). For more information on tiered data storage, be sure to check out our tiered storage topic page.
There are three main reasons why you should implement dynamic storage tiering (DST) in your environment: To maximize the use of expensive and fast storage, especially SSDs; to cope with the growth of file-based data; and to incorporate cloud storage services. This tip analyzes the different DST product categories -- including array-based, storage virtualization-based and file-based -- and offers advice on how to choose the right one for your environment. Read the full tip on dynamic storage tiering options.
Before you dive into sub-LUN tiering, you need to consider five questions: How many tiers does your auto-tiering software support? Will the size of the data chunks being moved have an impact? How long does it take auto-tiering software to migrate data to another tier? How do you track the effectiveness of the auto tiering? And do you have a lot of control over the auto-tiering software? Find out the answers to these important sub-LUN tiering questions.
Tiered data storage can help lower costs, address capacity issues and improve performance. However, challenges often arise with tiered storage such as data migration. In this podcast interview, Jeff Boles addresses the challenges associated with tiered storage, including data migration.
IT shops that typically use hard disk drives (HDDs) because they're cheaper than solid-state drives (SSDs) are finding it increasingly difficult to manually tier data, especially if they have an application where performance requirements change often. But now that auto-tiering software can move chunks of data to a specific tier at the right time, SSDs may become the more popular choice among IT shops. Read the full story on auto-tiering software and SSDs.
This was first published in April 2011