How to build a 64Gb Low Power and Fast ESXi Home Lab

Recently I decided it was time to move my current  home lab environment to some green low power hardware. After some research I’ve  stumbled upon a nice low power and small unit the Intel NUC. Not only is this system good enough for my new ESXi home lab; 16gb RAM, 2x Intel I3 Cores, 1x 1GB …

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Nexenta scale and cluster

Hans de Leenheer blogged about Nexenta again Smile good post about Nexenta failover techniques.

1) Disk management:
The first part of failover management is still plane old ZFS. It’s the way disks work together, how I/O is handled and how data corruption is avoided.

  • Storage Pool: a set of (equally configured) vDEVs
  • vDEV: a set of disks with a certain protection level
  • RAIDZ: first form of physical disks protection level. Examples:
  • RAIDZ-5: 4 disks data, 1 disk parity
  • RAIDZ2-6: 4 disks data, 2 disks parity
  • RAIDZ3-9: 6 disks data, 3 disks parity
  • Mirrored Disks: second form of physical disks protection level. Here too you have multiple choices of failover (dual-mirror, triple-mirror, …)

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