Media support for encryption-capable TS1120 tape drives

The encryption-capable TS1120 tape drive reads and writes in the new recording format EEFMT2 (enterprise encrypted format 2), as well as EFMT1 (enterprise format 1) and EFMT2 (enterprise format 2). EEFMT2 records data in an encrypted format. EEFMT2 provides the same capacity as EFMT2. The IBM System Storage encryption-capable TS1120 tape drive uses these IBM System Storage family of tape media:

MEDIA5 - The IBM TotalStorage Enterprise Tape Cartridge (MEDIA5) physical media. Provides an uncompressed capacity of 500 GB with EFMT2 or EEFMT2 (300 GB with EFMT1) and compressed capacity of 1500 GB with EFMT2 or EEFMT2 (900 GB with EFMT1) assuming a 3:1 compression ratio, depending on the type of data written.
MEDIA6 - The IBM TotalStorage Enterprise WORM Tape Cartridge (MEDIA6) physical media. Provides an uncompressed capacity of 500 GB with EFMT2 or EEFMT2 (300 GB with EFMT1) and compressed capacity of 1500 GB with EFMT2 or EEFMT2 (900 GB with EFMT1) assuming a 3:1 compression ratio, depending on the type of data written.
MEDIA7 - The IBM TotalStorage Enterprise Economy Tape Cartridge (MEDIA7) physical media. Provides an uncompressed capacity of 100 GB with EFMT2 or EEFMT2 (60 GB with EFMT1) and compressed capacity of 300 GB with EFMT2 or EEFMT2 (180 GB with EFMT1) assuming a 3:1 compression ratio, depending on the type of data written.
MEDIA8 - The IBM TotalStorage Enterprise Economy WORM Tape Cartridge (MEDIA8) physical media. Provides an uncompressed capacity of 100 GB with EFMT2 or EEFMT2 (60 GB with EFMT1) and compressed capacity of 300 GB with EFMT2 or EEFMT2 (180 GB with EFMT1) assuming a 3:1 compression ratio, depending on the type of data written.
MEDIA9¹ - The IBM TotalStorage Enterprise Extended Tape Cartridge (MEDIA9) physical media. MEDIA9 requires the EFMT2 or EEFMT2 recording format, and provides an uncompressed capacity of 700 GB and compressed capacity of 2100 GB assuming a 3:1 compression ratio, depending on the type of data written.
MEDIA10¹ - The IBM TotalStorage Enterprise Extended WORM Tape Cartridge (MEDIA10) physical media. MEDIA10 requires the EFMT2 or EEFMT2 recording format, and provides an uncompressed capacity of 700 GB and compressed capacity of 2100 GB assuming a 3:1 compression ratio, depending on the type of data written.

You can use the encryption-capable TS1120 tape drive in the stand-alone environment or the tape library environment (automated or manual). Currently, the encryption-capable TS1120 tape drive does not have a cartridge loader.

Support for the encryption-capable TS1120 tape drive will be provided at z/OS V1R4 ² and later releases, however support for MEDIA9 and MEDIA10 requires z/OS V1R5 or later releases. Support for the encryption-capable TS1120 tape drive will be delivered in multiple stages with support for z/OS V1R6 and V1R7 being available first (refer to enabling APAR OA15685). For z/OS V1R8, refer to enabling APAR OA17562 and for z/OS V1R4 and V1R5, refer to enabling APAR OA18111.

Software support of the new media, MEDIA9 and MEDIA10, is available with the support of the encryption-capable TS1120 tape drive, however the media itself will be available at a later GA.

Note:

If no recording technology has been specified for MEDIA5, MEDIA6, MEDIA7, MEDIA8, MEDIA9, or MEDIA10, EFMT2 is the default recording technology. If EFMT1, EFMT2, or EEFMT2 is needed for interchange purposes, it can be specified through data class. This applies to both the stand-alone and to the system-managed tape library environments.
To enable the EEFMT2 formatted cartridges to be relabelled/reused from load point on a 3592 Model J1A (3592-1) or an existing 3592 Model E05 (3592-2), drive microcode updates are required on these drives. This is particularly important in a system-managed tape library environment, because common scratch pools are used across the media types.
For an encrypted tape cartridge, the cartridge stores both the encrypted user data and the critical key management-related information needed to interact with the Encryption Key Manager when decrypting data on the cartridge. A mix of data written in encrypted and non-encrypted formats is not supported on the same tape cartridge. Whether the data on a cartridge is written in encrypted format is determined during OPEN processing, when the first file sequence on the tape is written. If the first file written to a tape is in the encrypted format; all subsequent files written to that same tape cartridge will be written in the encrypted format. All files written to a cartridge in the encrypted format are encrypted using the same data key. The exception to this is the volume label structure for the first file sequence, which is encrypted using a key known to all encryption capable 3592 drives, which means it is effectively in the clear.
The encryption-capable TS1120 tape drive optionally provides performance scaling by using only 20 percent of the full capacity on a MEDIA5 or MEDIA9 cartridge. The default is to use the cartridge's full capacity. The performance scaling option is not available on MEDIA6, MEDIA7, MEDIA8, or MEDIA10 tape cartridge media.
The encryption-capable TS1120 tape drive optionally provides performance segmentation. Performance segmentation divides the cartridge into a fast access segment and a slower access segment. The fast access segment will be filled first, after which the slower segment will be filled. This option is available on MEDIA5 and MEDIA9 tapes, but is not available on MEDIA6, MEDIA7, MEDIA8, or MEDIA10 tape cartridge media. The performance segmentation option is mutually exclusive with the performance scaling option.
The encryption-capable TS1120 tape drive emulates only 3590 Model B1x tape drives (all 3592 tape cartridge media are supported in this emulation mode) in the standalone and in the system-managed tape library environment (manual or automated).
The encryption-capable TS1120 tape drive is supported by the 3592 Model J70 and C06 tape controllers, with either ESCON or FICON attachment.
The encryption-capable TS1120 tape drive coexists with 3490E, 3590, and 3592 Model J1A, and the non-encryption capable 3592 Model E05 devices in the 3494 automated tape library.
The encryption-capable TS1120 tape drive coexists with 3592 Model J1A and the non-encryption capable 3592 Model E05 devices in the 3584 automated tape library.
The encryption-capable TS1120 tape drive coexists with 3490, 3490E, 3590, and 3592 Model J1A, and the non-encryption capable 3592 Model E05 devices in a manual tape library.
The encryption-capable TS1120 tape drive cannot use the MEDIA3 or MEDIA4 cartridges used in 3590 tape drives.
The encryption-capable TS1120 tape drive also supports special modes that cause it to behave as a 3592 Model J1A (and therefore foregoing its encryption capabilities). When an encryption-capable TS1120 tape drive is attached to a J70 or C06 control unit that also has 3592 Model J1A devices, the encryption-capable TS1120 tape drive will appear to the host as a non-encryption-capable 3592 Model J1A, thus ensuring that all devices attached to the same control unit are homogeneous and have the same behaviors.
For the system-managed tape support (automated or manual), though a mix of TS1120 (3592 Model E05) tape drives can coexist in the same library, under the same control unit, the TS1120 tape drives must be homogeneous and support the same capabilities. 3592 Model E05 devices that are enabled for encryption cannot coexist in the same control unit with 3592 Model E05 devices that are not encryption capable.

Related reading:

See IBM System Storage TS1120 Tape Drive and Controller Introduction and Planning Guide, GA32-0555, for additional information.