Hi

 

I have 16 disks on a VM on my server with 2 m1015 controllers... all passed with ESXI passthrough...

I need to put 4 more disks... not space for more controllers and not budget.. .. so, i will try Physical RDM of the Onboard Ports via de vmkfstools.. I know that passthrough is better because is like the disks were on the VM machine, but i said the restrictions

 

I read lot of warnings about RDM with Freebsd/Freenas and ZFS, because of problems and data lost via RDM... i want to know if someone experienced similar problems in Unraid?

 

I read various post on the forum about how configure RDM... but i cant tell really if there was a real problem or just the recomendation that better use passthrough. If i use RDM with Unraid is a possible danger?, anyone that used RDM and got problems? how much time you use RDM without problems?

 

Thanks

 

EDIT: Sorry.. this topic should be in the Unraid 5 - General Support, an Admin/Mod can move it?

I've been using RDM disks for over a year on 2 N54L's without issue.

I've never heard/read about lost data with RDM. maybe I'll have to read up on it.

In any case, if you do not have a UPS nor shutdown the machine gracefully that could lead to some kind of data loss/corruption.

But through normal use I have not seen it on unRAID.

I've been using RDM disks for over a year on 2 N54L's without issue.

I've never heard/read about lost data with RDM. maybe I'll have to read up on it.

In any case, if you do not have a UPS nor shutdown the machine gracefully that could lead to some kind of data loss/corruption.

But through normal use I have not seen it on unRAID.

 

Thanks... i use both freenas and unraid for different purposes. I read a lot of warnings with RDM and zfs... but i didn't find anything with unraid.

 

Anyone that is using RDM?

I've been using RDM from ESXi 5.5 into unRAID v5 for a while now. Zero issues.

I've been using RDM disks for unRAID 5.0.5/6 with ESX 5.1 for over a year on 2 N54L's without issue.

Same as the above users.

Have used RDM for cache and a couple other drives without issue on ESXi 5+ for close to 2 years.

unRAID 5versions and now 6versions.

Ok.. thanks for the various responses... now i can do it with more confidence

 

I have been using RDM for my cache drive for years with esxi 5, 5.1, and 5.5 without any issues. Other drives are on a M1015.

 

May I ask what case are you using? My Centurion 590 with 3 x 4-in-3 drive cages are almost full.