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Access "Best Practices: Balance workloads with RAID types"

Published: 20 Oct 2012

Not all RAID types are created equal; the RAID you use can have a major impact on application performance. Vendors won't hesitate to tell you how beautifully parity-based RAID (RAID-5, RAID-6, RAID-4, etc.) works in their storage subsystems, making it almost unnecessary to use any type of striped/mirrored RAID protection. Users may see it as a way of getting a lot more usable storage out of the subsystem but, as the old adage warns, "Nothing in life is free." The same principle applies to storage: What you get back in usable storage, you pay for with processing power. One of the most common problems I encounter during storage assessments is a lack of attention to matching the workload profile of the application to how storage is provisioned in the array. This is often driven by sheer economics but, even when it isn't, bad storage practices can simply result in a poorly balanced system that shows signs of stress. Stress is the asymmetrical impact on various components in the array, such as cache, front-end ports, back-end disk directors and the backplane. ... Access >>>

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  • Columns
    • Storage Bin: Duplessie's theory of evolution

      Evolutionary changes in the storage world have opened the door to scores of smaller companies. Some of these startups have seized the opportunity, taking advantage of the current market dynamics. Good for them; but it's even better for you, with more choice and innovation than we've seen in a long time.

    • Hot Spots: Remote workers, stand up and be counted

      Remote-office workers need to share their experiences with corporate IT because there are many different issues associated with working remotely and a wide range of products to address those problems.

    • Best Practices: Balance workloads with RAID types

      Vendors will tell you how beautifully parity-based RAID works in their storage subsystems, making it almost unnecessary to use any type of striped/mirrored RAID protection. But if you don't match the workload profile of the application to how storage is provisioned in the array, you could wind up with a poorly balanced system.

    • Editorial: Who will run the storage shop?

      Who will run the storage shop?

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