The new IBM 7031-D24 TotalStorage EXP24 Ultra320 SCSI Expandable Disk Storage Enclosure provides more than 7TB of disk storage in a 4U rack-mount unit. Whether clients require high availability (HA) storage solutions or simply high capacity storage for a single server installation, the EXP24 provides a cost-effective solution. It provides 24 hot-swappable disk bays, 12 accessible from the front and 12 from the rear. Disk options are 73.4GB, 146.8GB or 300GB 10K rpm or 36.4GB, 73.4GB or 146.8GB 15K rpm drives. Each of the four six-packs may be attached independently to an Ultra320 SCSI or Ultra320 SCSI RAID adapter. Optionally, the two front and/or two rear six-packs may be connected together to form a single Ultra320 SCSI bus of 12 drives.