Super User is a question and answer site for computer enthusiasts and power users. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have an Acer EasyStore with a RAID5 mdraid array I use for storing my home files (photos, movies, etc), and I want to migrate it to ZFS with Ubuntu (the native kernel module from zfsonlinux.org).

I hear that ZFS needs a lot of RAM, but the EasyStore only has 2 GB. The RAIDZ will be three 1.5GB disks, and I'm wondering if ZFS won't work with 2 GB of RAM. What problems, if any, am I likely to see? Performance isn't a concern, as long as it can stream HD movies in real time, which is basically the use case this computer sees.

share|improve this question

migrated from serverfault.com Dec 13 '12 at 0:09

This question came from our site for system and network administrators.

    
Yes, my ZFS NAS runs fine with just 2 GB of memory. The performance isn't stellar (which may be more to do with the network, or the CPU), but it can certainly stream HD films. – sblair Dec 13 '12 at 0:31
up vote 2 down vote accepted

It will work, even with a small RAM footprint. ZFS uses RAM as a caching layer and for some of the advanced features like deduplication. Don't expect any boost in performance over what you have now, though.

share|improve this answer
    
That's fine, I only want it for the improved RAID capabilities, checksumming and various other features. Thank you. – Stavros Korokithakis Dec 12 '12 at 11:40

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .