Hardware Options Additional Memory - Four processor systems This option is available in increments of one gigabyte. 1GB add-on memory for Intel Pentium III Xeon processor-based quads equals four each 256MB IC-DRAM. Additional Memory - Eight processor systems This option is available in increments of one and two gigabytes. 1GB add-on memory for Intel Pentium III Xeon processor-based quads equals four each 256MB IC-DRAM. Also includes required additional cache for interconnect. Storage External storage options are available in increments of 108GB, 180GB and 252GB. Each option is comprised of 9GB disks, and appropriate cables. Backup This option allows a choice of one DLT7000 Single Drive Table Top, or one STK 9730 Rackmount Library with 2 DLT7000 drives and 30 data cartridges. Quantum DLT half-inch cartridge tape drives deliver dependable data storage and retrieval along with major advantages in performance and capacity.