File:Shinra10-hdds.jpg

Shinra's magnetic storage: ten 1 Terabyte Western Digital Caviar Green WD10EADS and two 147 Gigabyte Fujitsu MBA3147RC drives. The two Fujitsu drives, while smaller in capacity, are much faster: they spin at 15,000 RPM, have an average latency of 2 milliseconds, and use the newer Serial Attached SCSI (SAS) data connections to sustain higher transfers. The Western Digital drives use special technology to balance the RPM between 5,400 and 7,200 to conserve energy, have a latency around 9 milliseconds, and use the standard Serial ATA (SATA) II data connections. The final configuration of Shinra puts the 147GB SAS drives in a RAID-1 array, and the 1TB drives in a RAID-6 array.