Hi All,

 

I am testing with unraid for my storage.

Maybe i misunderstanding? but wat i need is a storage pool that i can build up every time when i need more space, things what i cannot do with freenas raidz-2 because i need to make large vdev pools immediately and this bring high costs.

 

My test system have 1x 500GB Parity disk, 2x 500GB Data disks, 1x 500GB cache disk. I make 100GB and 10GB files and upload this to the storage pool, after a couple of times you guess it the 500GB disks is full but i attach 2x 500GB so why it not go further in the other 500GB disk? because the total amount is 1TB?

 

I thinking unraid not work like i think that it work, you must see every disk separate and not like one big disk pool.

 

Can someone tell me more about this?

 

Thanks a lot.

 

greetings remco

UnRAID has the concept of User Shares that are a virtual share spanning multiple drives.  If you add another (or replace an existing drive with a larger one) then this additional space is immediately available for User Shares.

 

You have settings for User Shares that can (optionally) control which drives any particular share is allowed to use.  You also have controls over which drives any particular file is allocated to use, and also how drives should be filled up.

Thanks for your reply itimpi.

 

I set it like that see the attachment. What do i wrong?

What makes you think that anything is wrong?

 

Perhaps the issue is that initially it is only writing to the first disk?    If so that will because the Allocation method selected is Fill-Up.

 

Another thing to be aware of is that in the case where there is a conflict between Allocation Method, and Split Level as to which disk is to be selected for a new file, then Split Level takes priority.

 

You also want to set the Minimum Free Space value to be more than the largest file you will want to copy.    If you do not do this, then unRAID may select a disk that does not have space for a given file and then get a failure while copying.    This is a side-effect of the fact that each disk is a free-standing file system and thus files are not spanned across disks.

Thx for your reply itimpi.

 

I change now Allocation method to High-water and it works perfect! just what i need to store much as possible storage on my box.