IBM Power 720 Overview page 50

The two drive slots of the 7216 enclosure can hold the following drive combinations:
One tape drive (DAT160 SAS or LTO Ultrium 5 Half-High SAS) with second bay empty
Two tape drives (DAT160 SAS or LTO Ultrium 5 Half-High SAS) in any combination
One tape drive (DAT160 SAS or LTO Ultrium 5 Half-High SAS) and one DVD-RAM SAS
drive sled with one or two DVD-RAM SAS drives
Up to four DVD-RAM drives
One tape drive (DAT160 SAS or LTO Ultrium 5 Half-High SAS) in one bay, and one RDX
Removable HDD Docking Station in the other drive bay
One RDX Removable HDD Docking Station and one DVD-RAM SAS drive sled with one
or two DVD-RAM SAS drives in the bay on the right
Two RDX Removable HDD Docking Stations
Figure 1-11 shows the 7216 Multi-Media Enclosure.
Figure 1-11
In general, the 7216-1U2 is supported by the AIX, IBM i, and Linux operating systems. IBM i,
from Version 7.1, now fully supports the internal 5.25 inch RDX SATA removable HDD
docking station, including boot support (no VIOS support). This support provides a fast,
robust, high-performance alternative to tape backup/restore devices.
IBM System Storage 7226 Model 1U3 Multi-Media Enclosure
IBM System Storage 7226 Model 1U3 Multi-Media Enclosure can accommodate up to two
tape drives, two RDX removable disk drive docking stations, or up to four DVD-RAM drives.
The 7226 offers SAS, USB, and FC electronic interface drive options.
The 7226 Storage Enclosure delivers external tape, removable disk drive, and DVD-RAM
drive options that allow data transfer within similar system archival storage and retrieval
technologies installed in existing IT facilities. The 7226 offers an expansive list of drive feature
options.
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IBM Power 720 and 740 Technical Overview and Introduction
The 7216 Multi-Media Enclosure