Sun Microsystems StorageTek StreamLine SL8500, System Assurance Manual

Page: 123 / 278

E24254-01 Chapter 4 Site Preparation 103
Site Preparation
■
Pass-thru Port Planning
Figure 38 shows two examples of three libraries connected with PTPs.
- Example A shows the LSM numbering as you add libraries to the left.
- Example B shows the LSM numbering as you add libraries to the right.
To implement the pass-thru port feature, you must have:
• Accessory racks: 1 rack (required) 2 racks for power redundancy
• Inter-library Communications kit (PN 314842401)
• PTP conversion bill and instructions
• Software upgrade and reconfiguration
Make sure these are at the following levels or higher :
• Library firmware: FRS_1.70 (3.70.00) or higher—current is FRS_2.52
• Library Console: FRS_2.00 (such as 2.16)
• ACSLS: 7.1 plus PUT0501 for Near Continuous Operation
• HSC: 6.0 plus PTFs (minimum) or

HSC: 6.1 which added Near Continuous Operation (NCO).
Figure 38. Pass-thru Port Planning Example
Example A Example B
In this example, adding another library (C) to the left of
the library complex increases the LSM numbering
sequentially.
This is the preferred method.
In this example, adding another library (C) to the right
of the library complex requires a reconfiguration of
LSM numbering.
Important:

For non-disruptive growth, the preferred method is to add libraries from right to left . However, the
library can grow in the other direction—from left to right —but this requires a disruption to

re-configuration the system, re-number the LSMs, and re-IPL the library.