Special
consideration is required to prevent or minimize problems when
mixing different generations of LTO drives and media in a single library.
LTO drive encryption might also be a consideration.
Mixing LTO drives and media in a library
When mixing different generations of LTO drives and media,
you need to consider the read-write capabilities of each generation.
As a best practice, configure a different device class for each generation
of media.
Mount limits in LTO mixed-media environments
In a mixed-media library, in which multiple device classes
point to the same library, compatible drives are shared between storage
pools. You must pay special attention to setting an appropriate value
for the MOUNTLIMIT parameter in each of the device classes. In a mixed
media library containing Ultrium Generation 1 and Ultrium Generation
2 drives and media, for example, Ultrium Generation 1 media can get
mounted in Ultrium Generation 2 drives.
Encrypting data using LTO generation 4 tape drives Tivoli® Storage
Manager supports
the three types of drive encryption available with LTO generation
4 drives: Application, System, and Library. These methods are defined
through the hardware.