These limitations do not apply when using a non-RAID controller, which is the preferred method of supplying disks to ZFS.'” Note that hardware RAID configured as JBOD may still detach disks that do not respond in time and as such may require TLER/CCTL/ERC-enabled disks to prevent drive dropouts. turn off RAID-functionality) for ZFS to be able to guarantee data integrity. If the user insists on using hardware-level RAID, the controller should be configured as JBOD mode (i.e. ZFS prefers direct, exclusive access to the disks, with nothing in between that interferes.

According to Wikipedia: 'ZFS cannot fully protect the user's data when using a hardware RAID controller, as it is not able to perform the automatic self-healing unless it controls the redundancy of the disks and data. “NOTE: instead of mixing ZFS RAID with hardware RAID, it is recommended that you place your hardware RAID controller in JBOD mode and let ZFS handle the RAID. Http:/ / / index.php/ Hardware_Recommendations If 7 RAID 1’s are preferred will l be able to group these into volumes as desired? Have you had success using ZFS with a hotspare?Īlso should I be concerned about using hardware RAID as mentioned in this link: My main question has to do with setting up ZFS?įirstly, would you recommend One Big RAID 10 or 7 RAID 1’s with this setup?

My desire is to use Unitrends to do backups to the storage server for DR. This storage server is for backups, archiving and imaging. HP Proliant DL180 G6 2xL5520 Quad Core 48 GB RAMġ4 WD red label NAS class 2 TB sata drivesĪlso I have NFR edition of Unitrends running on a MS Server 2012 with Hyper-V

Freenas volume manager set up zfs pool