HP Jamaica Wikipedia
The Jamaica was an external SCSI disk enclosure storage device from Hewlett-Packard. It was available in deskside or rackmount chassis. The Jamaica had two drive bays, each with its own SCSI bus. Each bay was capable of holding up to four hot-swappable disk modules or tape drives, two hot-swappable power supplies, and two hot-swappable fan modules.
Available modules included:1.6 inch DDS Tape (uses two slots)
1.6 inch disk module (uses two slots)
1 inch disk module (uses one slot)
Disk modules were single-ended SCSI or fast/wide differential SCSI.