The FAStT600 Model 6LU Turbo upgrade option (#24P8964) provides two RAID controllers, each with 1 GB of cache, and an additional power supply for full redundancy. It enables all additional features applicable to the FAStT600 with Turbo model. Option part number 24P8964 includes FAStT Storage Manager V8.4, eight storage portions, and attachment licenses for up to seven FAStT700 Storage Servers.