Tapes inserted to fibre tape drives being set to full. - Red Hat Customer Portal

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Issue

When using a product called EMC Networker for backups together with another product called emc data domain to provide virtual taped drives to all the servers, on Red Hat Enterprise Linux 6 the tapes are reported as full.
This issue does not occur on Red Hat Enterprise Linux 5.
We have been advised by storage vendor to modify the value of lpfc_sg_seg_cnt from 64 to 256 to overcome a tape driver related issue. Can you advise if this will affect any other areas of the OS's operation?

Environment

Red Hat Enterprise Linux (RHEL) 6.3

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