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Data Domain Boosts Throughput With OS Upgrade

Storage systems vendor Data Domain, perhaps best known for its data de-duplication capabilities, today released a new version of its operating system that it says can boost backup throughput by up to 100 percent on some systems.

Version 4.6 of the operating system, available at no charge to customers with standard support agreements, uses the company's proprietary Stream-Informed Segment Layout, or SISL, to minimize the number of disk lookups needed to speed up throughput, executives said. "Our controllers are based on standard Intel chips and we've tuned the software to take advantage of the multi-core technology," says Brian Biles, vp of product management. "As the CPUs get faster we get faster."

The company says its flagship DD690 with Symantec NetBackup OpenStorage and 10-Gigabit Ethernet can handle 2.7 TB of data an hour, a 90 percent improvement. Its DDS Array can handle 43.2 TB an hour, also a 90 percent increase, while its low-end DD120 boosted performance by 100 percent to 300 GB an hour. Data Domain's other systems, the DD510, DD530, DD565, and DD580, increase throughput by around 50 percent using the new operating system.

The DD690 uses a special plug-in that works with NetBackup Open Storage and a custom protocol over 10-Gigabit Ethernet to take advantage of multi-threading to add an extra performance boost, Biles says. "Our architecture is different than others in that we break up data streams coming into little pieces and see whether we've stored those parts before," he says. "Others in the industry have to look at data on disk while we can store it all in RAM."

Data Domain also has integrated 10-Gigabit Ethernet into the DD690 and can support a variety of NAS protocols, including NFS and CIFS. Biles says it is easier for users to manage a single 10-GigE connection that five 1-Gigabit Ether connections. "We see it as an enabling technology and we are agnostic about the future," he says. "We can support Ethernet or Fibre Channel or VTL over Fibre Channel or 10 Gig Fibre Channel over Ethernet."

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