XFS tune to adaptec ASR71605

[Steve Brooks]

Hi All,

New to the list so first hello to you all from St Andrews, Scotland. 
We have three new raid hosts each with an Adaptec ASR71605 
controller. Given upstream (Red Hat) are going to be using XFS as their 
default file system we are going to use XFS on the three raid hosts. After 
much reading around this is what I came up with.

All hosts have 16x4TB WD RE WD4000FYYZ drives and will run "RAID 6"

The underlying RAID details are

    RAID level                               : 6 Reed-Solomon
    Status of logical device                 : Optimal
    Size                                     : 53401590 MB
    Stripe-unit size                         : 512 KB
    Read-cache setting                       : Enabled
    Read-cache status                        : On
    Write-cache setting                      : Disabled
    Write-cache status                       : Off
    Partitioned                              : No


I built the filesystem with

mkfs.xfs -f -d su=512k,sw=14 /dev/sda

and mounted with fstab options

xfs    defaults,inode64,nobarrier


My question is are the "mkfs.xfs" and the mount options I used sensible? 
The RAID is to be used to store data from "numerical simulations" that 
were run on a high performance cluster and is not mission critical in the 
sense that it can be regenerated if lost. Of course that would take the 
user/cluster some time.

Thanks for any advice.

Steve