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Chapter 6. IBM TotalStorage DS8000 model overview and scalability 105
In the following sections, we describe these models further:
1. DS8100 Model 921
This model features a dual two-way processor complex and it includes a base frame and
an optional expansion frame.
2. DS8300 Models 922 and 9A2
The DS8300 is a dual four-way processor complex with a Model 922 base frame and up to
two optional Model 92E expansion frames. Model 9A2 is also a dual four-way processor
complex, but it offers two IBM TotalStorage storage system Logical Partitions (LPARs) in
one machine. The Model 9A2 can also be expanded with up to two Model 9AE expansion
units.
6.1.2 DS8100 Model 921
The DS8100 Model 921 has the following features:
Two processor complexes with pSeries POWER5 1.5 GHz two-way CEC each.
Up to 128 DDMs for a maximum disk storage capacity of 38.4 TB with 300 GB DDMs.
Up to 128 GB of processor memory, which was referred as
cache in the ESS 800.
Up to 16 host adapters (HAs) with four ports per HA and 2 Gbps per port. Each port can
be independently configured as either a Fibre Channel protocol (FCP) port for open
systems host connection or PPRC FCP links, but also as a FICON port to connect to
zSeries hosts. This totals up to 64 ports with any mix of FCP and FICON ports. ESCON
host connection is also supported. But with ESCON, an HA contains only two ESCON
ports. A mix of ESCON ports and FCP ports on the same HA is not possible. A DS8000
can have both ESCON adapters and FCP/FICON adapters at the same time.
The DS8100 Model 921 connects to a wide variety of host server platforms. For an up-to-date
connectivity list, see:
http://www-1.ibm.com/servers/storage/disk/ds8000/interop.html
Figure 6-2 DS8100 Model 921 base frame open (left) and with Model 92E for max config