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Vol. 2 No. 10 December 2003

Tiered storage: Heterogeneous vs. homogeneous

Heterogeneous tiered storage In this approach, different technologies are used at each tier. Equipment costs are low, but moving data between tiers can be problematic. Tiered storage is one of those topics I'm hearing a lot about lately. But actually moving to a tiered storage strategy can be tricky. How do you architect your solution? And how do you move data as its value changes? When most people think of storage tiers, they think of the same thing: Different types of storage arrays at different price points that are designated to hold different classes of data. Imagine an infrastructure that contains the components as shown in "Heterogeneous tiered storage" on this page. This mythical company has four tiers of storage in use from four different vendors. Such a strategy has been proposed by many, and it makes some sense. The tiers are divided according to technical functionality, price and service levels. If there's a benefit to mixing enterprise, midrange and internal storage, there's also clearly an underlying problem: How ...

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Features in this issue

  • The pitfalls of smart switches

    Do you want to centralize storage management, cut costs and make your life a whole lot easier? There are a number of storage vendors promising these very things by creating products that move intelligence into the fabric, but smart fabrics will have their own issue.

  • Hot technologies in 2004

    In 2004, flexible, affordable new technologies are beginning to emerge that will open the door for smaller companies and allow them to sample some advanced storage strategies.

  • Reeling in a bigger salary

    The results from the first official survey of storage jobs are out, and you'll want to check them before either your staff's or your own performance review.

  • Starting the ILM process

    Information life cycle management (ILM) is the buzz right now. But too much emphasis is being put on products and not enough on understanding that ILM is really a process. Before you buy in, here's how to analyze what it means for you.

  • Sunny Day for Storage Consolidation

    Avant-garde storage consolidation

  • Is there a need for more speed?

    by  Jeff Moad

    Fibre Channel switch and HBA vendors will be shipping 10Gb/s gear in early 2004. The Fibre Channel Industry Association has just backed a 4Gb/s standard, yet how necessary is this when some enterprises have only recently migrated from 1Gb/s to 2Gb/s?

Columns in this issue

  • EMC and NetApp still think they're competitors

    Storage Bin: EMC and NetApp still think they're competitors; they spend time and money planning defense strategies. Maybe if they paused to think for a minute, they'd see that they're two successful companies growing in vastly different directions.

  • Tiered storage: Heterogeneous vs. homogeneous

    by  Stephen Foskett

    Tiered storage is a hot idea, but implementing it can be trickier than appears. This article defines the two different approaches--heterogeneous and homogeneous--and helps you choose the strategy you should employ.

  • Booting from the SAN

    by  Darryl Brooks

    Although booting from the SAN isn't a widespread practice, it gives an organization many choices in the way it manages server and storage infrastructures.

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