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Ten Steps You Shouldn't Take to Make Storage Run Faster

  • Ten Steps You Shouldn't Take to Make Storage Run Faster-

    Many legacy storage vendors mask the slow performance of their storage systems with the use of caches of DRAM. This results in hit or miss performance, allowing some “lucky” I/O operations to complete with faster response times, a “cache hit.” However, “unlucky” operations whose data is not found within the cache experience the extra penalty of a “cache miss:” looking unsuccessfully for the data and then having to take the additional hit of searching again on the underlying disk storage. Performance becomes unpredictable, a problem exacerbated by operations such as backups and batch jobs, which clear the cache of useful data.

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Ten Steps You Shouldn't Take to Make Storage Run Faster

  • 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12
  • Ten Steps You Shouldn't Take to Make Storage Run Faster-5

    Many legacy storage vendors mask the slow performance of their storage systems with the use of caches of DRAM. This results in hit or miss performance, allowing some “lucky” I/O operations to complete with faster response times, a “cache hit.” However, “unlucky” operations whose data is not found within the cache experience the extra penalty of a “cache miss:” looking unsuccessfully for the data and then having to take the additional hit of searching again on the underlying disk storage. Performance becomes unpredictable, a problem exacerbated by operations such as backups and batch jobs, which clear the cache of useful data.

Typically, compromise can be a great thing – certainly a mandate in most relationships, but not in the world of IT, and especially not in the storage space. In IT, compromise always comes at a cost. For years, IT has been inventing and implementing workarounds to cope with the poor performance of storage systems bound by mechanical hard disks. As processor, memory and network speeds have repeatedly doubled over the years, storage media have failed to keep pace, creating unbalanced ecosystems.

Often, these compromises are so ingrained that they have become second nature. No thought is given to the overhead because no alternatives existed. That is, until now, with the proliferation of flash-based storage systems and the trajectory of the all-silicon data center.

Fahima Zahir, product marketing, Violin Memory, has identified the top 10 coping mechanisms found in today’s storage environments that should be avoided.