20TB Storage System (fsck????)

[Petri Helenius]

Piotr KUCHARSKI wrote:

>How many is "too many"? Or, rather, what are write-performance penalties
>when using sixteen disks in one hw raid5 set? (With two raid volumes,
>2TB and 1.75TB available for OS.)
>  
>
With raid5 you read one and write two disks for each write, wide arrays 
really hurt
when running on degraded mode but I don´t see what´s the issue when running
fully operational? Though people usually expect raid to deliver some 
performance
when degraded so running raid50 instead of too wide raid5 is usually a good
idea. (50 being striped raid5 arrays)

Pete