See also ZFS - Basic Commands.

See also Shared Storage System.

See also napp-it.

See also OpenIndiana.

ZFS Best Practices

ZFS for Dummies

Read Me First

Oracle Solaris ZFS Administration Guide

ZFS Support Links

Why You Need ECC RAM

Nexenta Hardware Support List

Troubleshooting and Info

Cheat Sheet

ZFS is a new and high-performance filesystem devised by Sun Microsystems (now Oracle) for the Solaris unix operating system. It has been ported to FreeBSD as well.

http://www.eall.com.br/blog/?p=2481

• FreeNAS
  • http://www.freenas.org/
• Nexenta
  • http://www.nexenta.com
  • http://www.nexentastor.org
• OpenIndiana + Napp-it
  • http://www.napp-it.org
  • http://wiki.openindiana.org/oi/napp-it,+ready+to+use+NAS+SAN+storage+server+with+WEB-GUI

http://www.nex7.com/readme1st (scroll down to 'Pool Design Rules')

http://researchblogs.cs.bham.ac.uk/specialist-computing/2012/05/configuring-the-storage-pools-building-an-openindiana-based-zfs-file-server-part-4/

http://www.nex7.com/node/9

http://forums.freenas.org/showthread.php?7775-Slideshow-explaining-VDev-zpool-ZIL-and-L2ARC-for-noobs!

http://forums.freenas.org/showthread.php?158-What-number-of-drives-are-allowed-in-a-RAIDZ-config

http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide#RAIDZ_Configuration_Requirements_and_Recommendations

http://www.solarisinternals.com/wiki/index.php/ZFS_Best_Practices_Guide

You should have 3, 5, or 9 devices in each vdev

You should have 4, 6, or 10 devices in each vdev

You should have 5, 7, or 11 devices in each vdev

http://www.oracle.com/technetwork/articles/systems-hardware-architecture/raid-strategy-hi-capacity-drives-170907.pdf

Always enable compression.

• LZJB is the default compression algorithm
• Choose “compression=lzjb” due to its lower overhead
• gzip level 6 (default) saves more space and is still pretty fast
• gzip level 9 saves even more space but uses more CPU
• If you enable compression on a pool, it will also be enabled for datasets in that pool
• You can specify compression settings per dataset (share)

zfs set compression=on rpool
zfs set compression=on rpool/ROOT

• NFS or iSCSI?
  • http://blog.scottlowe.org/2009/07/01/republished-dispelling-some-vmware-over-nfs-myths/
• Jumbo Frames?

http://www.nexentastor.org/boards/1/topics/972

http://constantin.glez.de/blog/2011/07/zfs-dedupe-or-not-dedupe

http://www.zfsbuild.com/2011/11/18/dedupe-be-careful/

http://wiki.illumos.org/display/illumos/ZFS+and+Advanced+Format+disks

For large-memory systems, choose a larger boot drive because the swap and dump devices take up a lot of space by default.

http://docs.oracle.com/cd/E19963-01/html/821-1448/ggrln.html

http://docs.oracle.com/cd/E19963-01/html/821-1448/zfsboot-2.html

https://github.com/justintime/zpool-scrub-cron/blob/master/zpool_scrub.sh

Scrubs are I/O intensive and can negatively impact performance. They should be scheduled for evenings or weekends to minimize the impact to users.

• Napp-IT has an 'auto-service' to facilitate scrub job scheduling and creation