HP ESL E-series Tape Libraries User Manual
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A CLM Library can contain from 1–44 drives. Only the primary cabinet is required to contain a drive,
but all cabinets may contain drives. Each cabinet contains at least one cluster. A cluster must be full
(contain 4 drives) before drives can be added to the next sequential cluster. The primary cabinet may
contain up to 5 clusters; the location of cluster 6 is used by the CLM robotics controller. Secondary
cabinets may contain up to 6 clusters.
The following drive configurations are allowed:
•
If the secondary cabinet contains no drives, the primary cabinet must contain at least 1 drive
cluster containing 1–4 drives, and can have as many as 5 drive clusters.
Figure 14 CLM with only one drive (shown from behind the library)
.
•
If the secondary cabinet (cabinet 2) contains any drives, the primary cabinet must have at least 1
cluster that contains 4 drives, and can have as many as 5 clusters that each contain 4 drives.
Figure 15 CLM with drives in the secondary cabinet (shown from behind the library)
.
•
Secondary cabinets (cabinets 2–5) can contain zero drives, or can contain up to 6 clusters, each
containing up to 4 drives, until the maximum number of clusters and drives is reached.
Figure 16 CLM with drives in three cabinets (shown from behind the library)
.
•
The entire library can have up to 29 clusters and up to 44 drives. Maximum slot count in a 5
cabinet library is 3,560.
Cross Linked systems contain the following additional parts:
•
Cross Link arm (CLM arm)
•
Cross Link robotics controller (CLM robotics controller)
•
CLM expansion unit (needed for frames 3-5)
The CLM arm (see
) is used to send a shuttle between libraries. The shuttle carries a data
tape cartridge so that it can be stored in a secondary cabinet or retrieved for use, as necessary.
HP StorageWorks ESL E-Series Tape Library
29