Library Size In Mixed Stacks - Quantum ATL StackLink Installation Instructions Manual

Appendix A Library Size

Library Size in Mixed Stacks

Library Size in Mixed Stacks
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An ATL M2500 requires slightly less rack height (13.5U) than four
ATL M1500s (16U). A gap between library modules that is large enough
for an ATL M2500 will only accommodate three ATL M1500s. This means
that the gap can be filled with either 4 library levels (an ATL M2500) or
with 3 library levels (3 ATL M1500s).
In multiple library stacks containing only ATL M1500s, the firmware
assumes that any gaps will be filled with ATL M1500s. Thus a gap large
enough for an ATL M2500 will be treated as space for three ATL M1500s
and will be counted as 3 library levels, not 4 (see
In multiple library stacks containing one or more ATL M2500s, the
firmware assumes that a gap large enough for an ATL M2500 will be
filled with an ATL M2500. Thus the gap will be treated as space for 1
ATL M2500 and will be counted as 4 library levels (see
ATL StackLink™ Installation Instructions
figure 63).
figure 63).
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