We have a SSR212MC running DSS ( last version) equiped with one LSI Megaraid 8888LP SAS/STA RAID conected to 12 x 750 Gb SATA II segate HD mount as one RAID 6 ARRAY one volume.
We can achive in CIFS-NFS about 100 MB/s writing 1MByte block size ( using DD test in NFS and Disktest in CIFS) and only 25 MB in READ ( sequential test )
When we do a File copy in CIFS we can achive only 30 in wrrite and 25 in read !!!!

Does somebody see the same problem ?
Any special solution ?
Could it be comming from the driver used fro this LSI Megaraid ?

We have an Old NAS R3 version running on an other system wihtout any performances problems.