The NAJ-1501 uses specific SFF-8485 sidebands. If you mix a generic SAS cable with a NetApp NAJ-1501, the shelf will throw SCSI enclosure errors. You must use the NetApp-specific NAJ-1501 because the LED GPIO pinout is non-standard.
: Dual hot-pluggable integrated power supply and fan assemblies (913W) Installation and Setup Guide Netapp Naj-1501 Manual
NetApp does not host manuals on public web servers due to security and support policies. Here’s the correct, legal way to obtain the : The NAJ-1501 uses specific SFF-8485 sidebands