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Comment on Hardware raccomandation for new selfhoster

A dual disk setup for ZFS (or any other kind of RAID) is super wasteful.

Based on what? I’ve been running ZFS since it was Solaris-only and raidz1/raidz2 are OK, but they come with complexity and performance penalties, and they’re somewhat less portable than a mirror. There are many advantages to simple mirrors: first-response reads, block correction, scrubs, etc.

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fonix232@fedia.io ⁨1⁩ ⁨day⁩ ago
Portability is not really an aspect one needs to consider when it comes to a NAS. Performance hits? Z1 will have performance issues when running in a simple mirror (especially for writes), but with 4+ disks that reduces significantly.

Sure scrubs will take longer on a multi-disk array, but again for a home NAS, the goal is maximising data storage capacity without a major hit on performance, ideally being able to saturate the most common gigabit LAN connection and have some more bandwidth available for local processing.

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- non_burglar@lemmy.world ⁨1⁩ ⁨day⁩ ago
  
  Portability is not really an aspect one needs to consider when it comes to a NAS
  
  Hard disagree, and it is one of the best things about ZFS. You can plunk a ZFS pool on another system and be almost certain it will import. Systems die. Having been through several data-loss incidents, I find it is much preferable to be able to pull 1 disk than have to drag out 2 or three to transplant a ZFS pool.
  
  Regarding the scrubs, I was trying to indicate that ZFS is more than just a raid manager, there are advantages to ZFS on even a single disk.
  
  for a home NAS, the goal is maximising data storage capacity without a major hit on performance
  
  If that were entirely true, striping would be the most popular ZFS pool arrangement, since you get performance and max storage.
  
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