IHAC running NetApp FC-SAN and have below observations:
> create 1 x 4TB LUN (SATA with 16 disks aggr.), using window basic disk (GPT)
> application write performance is horrible, around 30 to 40MB/s only
> application read performance is around 45MB/s
> create 2 x 2TB LUN (SATA with 16 disks aggr., same aggr like above), using window basic disk (MBR)
> then create a 4TB LUN using RAID0 on above
> application write performance now is around 100MB/s
> application read performance is similar to above
They are running FAS3140, using same host server for above test.
They like to know any reason why above happened, or alternatively, do we have any documentation talk about the best practice to create large window LUN (target ~10TB single LUN).
Any input is highly appreciated.