ZFS: Setting up ZFS storage on Ubuntu

If you are new to ZFS, I would advise doing a little bit of research first to understand the fundamentals. Jim Salter’s articles on storage and ZFS are very recommended. https://arstechnica.com/information-technology/2020/05/zfs-101-understanding-zfs-storage-and-performance/ The examples below are to create a pool from a single disk, with separate datasets used for network backups.…

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Linux / Ubuntu / hdparm: Identifying drive features and setting sleep patterns

Preparing the storage Install hdparm and smartmontools Install hdparm and the SMART monitoring tools. Identify the right hard drive Make sure you identify the correct drive, as some of the commands will destroy data. If you don’t understand the commands, then check them first. You have been warned. Identify the…

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SNFS/Xsan: Quantum SNFS metadata controller and Xsan client compatibility chart

In a previous life, I designed and built many SANs based on Xsan (I believe I started with Xsan 1.3). I then migrated to looking after SANs based on SNFS, either from 3rd party vendors, or Quantum. I believe that the age of Fibre Channel is long over (although SNFS…

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