NFS Performance: Several mounts or mount root directory?

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http://superuser.com – Let's say I have the following directories on my main server, each of which is a software RAID5 across four disks. /data/raid1 /data/raid2 /data/raid3 /data/raid4 I am going to NFS mount on a number of computers to share access. Is there are performance difference between a single mount of /data/ vs. individually mounting the RAIDs using four separate mount commands in /etc/fstab? (HowTos)