I will re-setup a new unraid, using the latest version, 5.05.  I have 4 drives, 2 TB each.  Seagate Green, Seagate LP, 2 Western Digital Reds.  Which is best as parity?  Green or LP?

 

Do these drives need to be 4K aligned?

 

Do they need -A or -a during preclear?

 

Thanks

All new or newly added drives should be 4k-aligned. Under Settings->Disk Settings Set the Default partition format: to 4K-aligned. Once this setting is made use neither -a or -A, i.e. use no flag, and the disk will be 4K-aligned.

I will re-setup a new unraid, using the latest version, 5.05.  I have 4 drives, 2 TB each.  Seagate Green, Seagate LP, 2 Western Digital Reds.  Which is best as parity?  Green or LP?

 

Do these drives need to be 4K aligned?

 

Do they need -A or -a during preclear?

 

Thanks

 

Im nor sure about the seagate greens but they is a long thread about the WD's you might want to check if the seagates suffer from this.

Does he need to ensure the jumper is removed if installed?

Who added the jumper? This applies to new or newly added drives. No drive comes with a jumper.

 

hello dgaschk,

 

What do you mean by "Once this setting is made use neither -a or -A, i.e. use no flag, and the disk will be 4K-aligned."

 

I shouldn't use -a or -A?  Just the regular preclear command?

 

Thanks

 

 

All new or newly added drives should be 4k-aligned. Under Settings->Disk Settings Set the Default partition format: to 4K-aligned. Once this setting is made use neither -a or -A, i.e. use no flag, and the disk will be 4K-aligned.

.

 

 

If you set the default settings as described above you do NOT specify any -a or -A flag and all discs then automatically align on 4k block boundary.

Preclear will use the Default partition format by default. -a or -A is NOT required.

Thanks superloopy and dgaschk for the clarification and help