Reccomendations Concerning Disk Filling

[guillaumesoucy]

Hi their,

I have 3 FreeNAS box running in one 24 bay RPC-4224 server chassi et two other running into 8 bay RPC-4308 server chassi.

Each disk is mounted separatly, so what is the maximum disk space percentage I can use on my disks before having issues.


Thanks,

Guillaume

 

[depasseg]

I have 3 FreeNAS box running in one 24 bay RPC-4224 server chassi et two other running into 8 bay RPC-4308 server chassi.

Each disk is mounted separatly, so what is the maximum disk space percentage I can use on my disks before having issues.

I'm not sure what you are trying to say. 1 is running on an RPC-4224 and the other 2 are on an RPC-4308? Is that correct?
What do you mean each disk is mounted separately?

 

[guillaumesoucy]

Yes, this is correct for the servers chassi.

Also I mean the disks are not in any kind of RAID, all disk is used independently.

I hope that help!

 

[pirateghost]

Why on earth would you forego freenas greatest feature?

What is the purpose of running freenas if you aren't going to use the main features?

 

[depasseg]

I think you mean that you aren't using Hardware RAID, correct? You have ZFS pools on your servers, right?

 

[guillaumesoucy]

Yes Im not using RAID simply because it not protect data in case of fire. I prefer to have external backup instead.

And, what you mean by "ZFS Pool"?

 

[pirateghost]

Are you using freenas?

 

[depasseg]

To answer your original question - the recommendation is to not fill a pool to greater that 80% and if using ISCSI don't go beyond 50%.

Can you ssh into your servers (using Putty or similar) and post the output of zpool status. Please insert into the post using code tags.

Also, what version of FreeNAS are you running?

 

[guillaumesoucy]

Yes I use FreeNAS. For the zpool and the exact FreeNAS version, I will need to go in my house but it will not be before 5Pm ET. Im at work right now... Just a question who might look stupid but for its not. What happen if I fill my disks at more than 80%?

 

[pirateghost]

I'm confused on how you have freenas setup. All disks are individual pools?

 

[depasseg]

If you go beyond 80, things will just slow down due to fragmentation.

If you fill to 100%, then there are potential catastrophic consequences.

 

[guillaumesoucy]

@pirateghost I dont know at 100% what is a pool. But if I understand the correct thing. I will awswer yes.

 

[pirateghost]

@pirateghost I dont know at 100% what is a pool. But if I understand the correct thing. I will awswer yes.

I think you need to do some reading. The documentation covers it fairly well but cyberjocks power point presentation should get you up to speed.

 

[guillaumesoucy]

Yes thanks!

 

[guillaumesoucy]

@depasseg

Did you know if there was an automatic stopper for avoiding to fill my drives to 100% or I need to set a quota by myself?

 

[depasseg]

@depasseg

Did you know if there was an automatic stopper for avoiding to fill my drives to 100% or I need to set a quota by myself?

There is no automatic setting, and quota will not help. The best suggestion is to create a dataset with a reservation. That way when you fill the other dataset, you can reduce the reservation in order to delete files. You should really read up on that.

 

[guillaumesoucy]

I read this: http://doc.freenas.org/9.3/freenas_storage.html?highlight=dataset#create-dataset

I don't understand how to set a % for the dataset reservation. Its only in GB according the "edit options" window on my FreeNAS web GUI.

 

[depasseg]

That is correct. I reserve 100GB on mine but others reserve less.

 

[guillaumesoucy]

Ok I see...

So on each drives, I must reserve at least 100 GB. Just a question about this, 100 GB its not 20% of a 8 TB (7.25 TB) drive, so that mean I do not have to follow the 80% rule? Just keep at least 100 GB free no matter the disk size?

 

[depasseg]

Pool. Free space in the pool.