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  • Tech Blog

    Cloud storage overview

    In a narrow sense, cloud storage refers to object storage. In a broader sense, it refers to any storage service (block, file or object level)…

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  • Tech Blog

    Virtualization 1 of 4 – Hypervisor

    In broad terms, virtualization of computing resource is about isolation of resources, at different levels. There are five levels of virtualization: In my context I…

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  • Tech Blog

    How NFS works

    I touched on NFS in several previous postings, and here is a deeper dive of this particular protocol. NFS is built on top of Remote…

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  • Tech Blog

    EMC Isilon

    EMC has several product lines for different use cases in enterprise data storage. Like may other IT solutions, the website is clouded with marketing terms…

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  • Tech Blog

    Docker Compose, Docker Stack and Docker Swarm

    This posting covers some basic docker orchestration tools. Docker Compose Docker Compose’s predecessor is a tool called Fig developed by Orchard, which was acquired by…

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  • Tech Blog

    Storage Nitty-Gritty 5 of 5 – Replication

    Replication Terms PIT (point in time) replica – snapshot of the source at some specific timestamp;Continuous Replica – always in-sync with the production data;Recoverability –…

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