Usually, techs relied on tribal knowledge. You just knew how to swap a drive. But this was an older model, and the error codes on the screen were cryptic. Error Code 0x80. He needed to know exactly what the controller was thinking before he yanked the wrong drive and tanked the whole system.
Use version 10.83.x or later for Windows/Linux. The manual explicitly states not to use the out-of-band Java Web Start method if your firmware is below 7.60. ibm ds3512 manual
Most administrative tasks—like creating RAID arrays or mapping hosts—are handled through the IBM DS Storage Manager Client . Usually, techs relied on tribal knowledge