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Seitel Gets More Bytes per Buck with Xserve RAID

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Boost your HCI efficiency and resilience with erasure coding

Hyper-converged infrastructures (HCI) promise to reduce the cost and complexity of running modern data centers, and many of these solutions use replication as the primary data protection mechanism.

Although replication is simple to implement and has lower CPU overhead, achieving high levels of resiliency with replication can require a lot of storage space.

This white paper highlights an HCI platform that implements scalar erasure codes to deliver higher storage efficiency and greater resilience than data replication. Access now and discover how you can enable efficient, resilient data protection in your hyper-converged environment.

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  • Tape Still a Viable Choice forArchiving and Large Backups

    No, the tape storage system isn’t dead, yet. This Drill Down explores how it lives on, mainly for archiving and with a boost from new technologies such as LTO-7 and Linear Tape File System (LTFS).

    The seventh-generation Linear Tape-Open (LTO) specification released in 2015 more than doubled the maximum compressed capacity to 15 TB and increased the data transfer rate to 750 megabytes per second. LTO-7 also improves the bit error rate to a significant degree. The LTO Consortium already has LTO-8, LTO-9 and LTO-10 on its roadmap, each with significant capacity and performance improvements. For instance, draft specs for LTO-8 call for 32 terabytes of compressed capacity and sustained data transfer rates of up to 1,180 megabytes per second.

    These tape storage system advances become more important as speedier technology such as solid-state drives raise users’ storage performance expectations. The performance and capacity gains also come as tape faces increased competition from the cloud for archiving. While cloud providers can store data cheaply, it can take a long time to get data in and out of the cloud.

    LTFS creates partitions on tape and stores catalog information about files written to that tape. That makes it much easier to find and access files on a tape storage system than was possible before LTFS. LTFS, also known as tape NAS, has been hailed as a tape’s savior. While it hasn’t caught on wildly, it is used by industries such as media and entertainment that make frequent use of archived tapes.

  • Storage Capacity 101 to Post-Grad in a Flash

    In this report from Quocirca, analyst Clive Longbottom explains why you don’t always get what you think you’re getting with flash storage.

    Data is made up from bits of information – 8 bits to a byte (4 to a nibble, for those who care). Kilobytes, Megabytes, Gigabytes, Terabytes and Petabytes all used to be based on the ‘power of 2’ system, so 1kB was 1,024 bytes (2 to the power 10), but has now come in line with standard metric notation, and is now 1,000 bytes.

    This immediately affects storage for anyone who was brought up on the power of 2 notation. As 1MB would be 1024 bytes squared (1,048,576 bytes), 1GB 1024 cubed, and 1TB 1024 to the power 4, we start to see how the quoted storage of a disk is less than many of us expect. It may only lead to a 1% error at the kilobyte level, but it’s getting close to 10% at the terabyte level; that is capacity that many think they are getting that they are not. To this end, the IEC has renamed old-style units as kibibytes (KiB), mebibytes (MiB) and gibibytes (GiB).

    But, as with all-flash storage, you get to use much more of your available capacity than with a disk-based solution.

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