User Guide

108 DS8000 Series: Concepts and Architecture
– Up to 32 host adapters (HAs) with four 2 Gbps Fibre Channel ports on each HA. Each
HA can be freely configured to hold:
• FCP ports to connect to FCP-based host servers
• FCP ports for PPRC links, which in turn can be shared between PPRC and
FCP-based hosts through a SAN fabric
• FICON ports to connect to one or more zSeries servers
• Any combination within a HA
– A HA can also have two ESCON ports, but you cannot mix ESCON ports with Fibre
Channel ports on the very same HA.
򐂰 With two 92E expansion frames or two 9AE expansion frames for the storage system
LPAR model the capacity expands to:
– Up to 640 DDMs in total for a maximum of 192 TB disk storage when utilizing 300 GB
DDMs. Figure 6-5 shows such a maximum configuration for Model 922 with two
expansion frames, Model 92E, or a Model 9A2 with two expansion frames Model 9AE.
This figure also shows the basic hardware components and how they are distributed
across all three frames.
Figure 6-5 DS8300 max config for Model 922/9A2 with 2 expansion frames (either 92E or 9AE)
Note the additional I/O enclosures in the first expansion frame, which is the middle frame in
Figure 6-5. Each expansion frame has twice as many DDMs as the base frame, so with 128
DDMs in the base frame and 2 x 256 DDMs in the expansion frames, a total of 640 DDMs is
possible.
6.2 Model comparison
DS8000 models vary in processor type, disk capacity, processor memory, and host adapters.
Table 6-1 on page 109 provides an overview of the different features and numbers for the
currently available DS8000 models.