What is the maximum number of tape drives that Red Hat Enterprise Linux can support?

Solution Verified - Updated -

Issue

  • A system has a high number of tape devices attached, (depending on the kernel version this can be more than 128 or more than 512 devices).
  • The following kernel message is logged:
st: too many tape devices (max <ST_MAX_TAPES>)

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 6
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 4
  • More than 128 or 512 tape drives, ie, a virtual tape library.

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