How to configure maximum performance storage space for Debian GNU / Linux on IBM DS 8300 Data Storage Systems
The IBM DS 8300 Data Storage Systems are multi millions dollars flexible high availability and performance SAN machines. But you may left much of such performance and availability behind if you do not configure then correctly for Debian GNU / Linux. More here
The IBM DS architecture was born for mainframe use. So you need to understand some different concepts / naming from the Debian GNU / Linux regular ones.
The IBM DS 8300 hardware and software (it is a multi cpu Power AIX machine) is optimized for highly parallel I/O requests.