ATTO Bench 256MB
256K Block size saw ATTO pull out well over 500+ MB/s read and 300+ MB/s write. 128K block size with 16K NTFS cluster seem to have boosted the ATTO write bandwidth slightly though.
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16K Block size vs 64K Block size
128K Block size vs 256K Block size
128K Block size with NTFS 16K cluster
