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Justin Warren on EMC XtremIO

Justin Warren of Eigenmagic writes:

XtremIO ‘X-bricks’ are dual-active controllers connected to 25 eMLC flash SSDs in a separate drive shelf. The logical path to the SSDs has two logical lookups: firstly its metadata (such as the ultimate location of the data block) and the data itself. Data (and metadata) is stored on the SSDs using a form of wide-striped 23+2 parity-RAID, which EMC call XDP because they don’t want to call it RAID for some reason. Differentiation from competitors, I assume. It looks, walks, and quacks like parity-RAID to me.

A great review of the Storage Field Day 5 presentation of XtremIO. Justin is spot on here.

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About the author

Tom Hollingsworth

Tom Hollingsworth is a networking professional, blogger, and speaker on advanced technology topics. He is also an organizer for networking and wireless for Tech Field Day.  His blog can be found at https://networkingnerd.net/

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