Does FreeNAS use ZFS?

FreeNAS® uses OpenZFS and each new version of FreeNAS® keeps up-to-date with the latest feature flags and OpenZFS bug fixes. Here is an overview of the features provided by ZFS: ZFS is a transactional, Copy-On-Write (COW) filesystem.

How much RAM do you need for FreeNAS?

8GB is the minimum for FreeNAS and do not go below that. You aren’t as special as your mommy told you and you risk your data if you think you are. For most home users 16GB is a very good sweet spot. If you plan to run lots of jails like Plex or Minecraft you should consider going with 32GB of RAM.

How many drives do you need for FreeNAS?

The recommended number of disks per vdev is between 3 and 9. With more disks, use multiple vdevs. Some older ZFS documentation recommends that a certain number of disks is needed for each type of RAIDZ in order to achieve optimal performance. On systems using LZ4 compression, which is the default for FreeNAS® 9.2.

How do you use ZFS on FreeNAS?

Configuring FreeNAS to Setup ZFS Storage Disks and Creating NFS Shares On FreeNAS – Part 2

  1. Set the web protocol to HTTP/HTTPS.
  2. Change web GUI address to 192.168. 0.225.
  3. Change Languages, Keyboard Map, Timezone, log server, Email.
  4. Add ZFS supported storage volume.
  5. Define any one of the sharing.

Does ZFS use a lot of RAM?

So yes, it can run on watchOS-level amount of RAM. ZFS data deduplication does not require much more ram than the non-deduplicated case. Performance will depend heavily on IOPS when the DDT entries are not in cache, but the system will run slowly even with miniscule RAM.

Does ZFS require more RAM?

ZFS on FreeNAS typically requires a base 8GB plus an additional 1GB per TB of disk space to get “decent” performance. This softens a bit as the number of TB managed gets out past maybe 20 or so. But some more demanding workloads will require substantially more RAM.

Is ZFS good for HDD?

ZFS is designed to make effective use of RAM and solid state drives for caching but data is still generally stored on slower and cheaper hard drives.

How many drives can fail in ZFS?

two drive failures
ZFS’s equivalent is RAIDZ2. It is a fairly safe RAID level because it has the ability to withstand two drive failures and still rebuild, meaning if one fails you can still withstand another drive failure before or while rebuilding without losing your pool.