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Vol. 3 No. 9 November 2004

Remote Replication Gets Out of the Array

If you're a Symmetrix user and have stringent remote replication requirements, Symmetrix Remote Data Facility (SRDF) is pretty much the only game in town. But SRDF has its limitations: It's extremely expensive and only works within Symmetrix environments. Last month, EMC chipped away at those complaints with the introduction of EMC Open Replicator for Symmetrix, which copies data between a Symm and IBM Shark, HDS Lightning and HP EVA. In addition, EMC added SRDF/Star, a three-site replication suite that allows a Symm to replicate synchronously and asynchronously at the same time to two separate sites. Today, the replication market stands at about $1 billion, and is split about 70/30 between array-based replication such as SRDF and IBM's PPRC, and host-based replication such as Veritas Volume Replicator, says Arun Taneja, founder of Taneja Group. SRDF has "the lion's share" of the array-based replication market, he says. For EMC, "it's the goose that laid the golden egg." But over the next couple of years, the majority of ...

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Features in this issue

  • The search for cost-effective disaster recovery

    Creating an efficient DR strategy starts with determining the value of your company's applications and data. You can find the right mix of DR technologies to protect your data without breaking the bank.

  • Accommodating arrays

    by  Jerome Wendt

    Modern storage arrays offer disk types to meet any need -- costly Fibre Channel (FC) disks for high-end applications requiring superior performance and availability, and lower-priced SATA disks for less-critical data. The arrays also come with mixed RAID configurations. But selecting the right mix of disks and RAID levels requires understanding the impact of those decisions.

  • Cheap SANs--Hype or Hot?

    Low-cost SANs still looking for a market

Columns in this issue