transfer rate MSA1500

[Davide Moronetti]

Hi there everyone,
I'm looking for an information that doesn't sit on any HP web page site and everywhere else.
I'm interested to know,if is known, the tranfer bitrate that HP certify for copying a 1 Gb file in a HP MSA1500, in a SATA configuration, from volume to volume.
I found an average of 20 Mbyte/s and I guess this is not an accetable bitrate.
could anyone advise?
thanx in advance
DM