IBM TotalStorage NAS 300 User Reference page 167

3. Have the same adapters/attachments in the same locations
4. Have the same address jumpers/terminators/cabling
5. Have the same software versions and levels
6. Have the same diagnostics code (version)
7. Have the same configuration options set in the system
8. Have the same setup for the operation system control files
Comparing the configuration and software set up between working and
nonworking systems will often lead to problem resolution.
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Appendix D. Symptom-to-part index