IBM DS8000 - Manual (Page 159)

Chapter 7. Copy Services 137
from these interfaces, S-HMC communicates with each server in the storage units via the
Ethernet network. Therefore, the S-HMC is a key component to configure and manage the
DS8000.
The network components for Copy Services are illustrated in Figure 7-16.
Figure 7-16 DS8000 Copy Services network components
Each DS8000 will have an internal S-HMC in the base frame, and you can have an external
S-HMC for redundancy.
For further information about the S-HMC, see Chapter 9, “Configuration planning” on
page 157.
7.3.2 DS Storage Manager Web-based interface
DS Storage Manager is a Web-based management interface. It is used for managing the
logical configurations and invoking the Copy Services functions. The DS Storage Manager
has an online mode and an offline mode; only the online mode is supported for Copy
Services.
DS Storage Manager is already installed in the S-HMC. You can also install it in other
computers that you prepare. When you manage the Copy Services functions with DS Storage
Manager in your computers, DS Storage Manager issues its command to the S-HMC via the
Ethernet network.
The DS Storage Manager can be used for almost all functions for Copy Services. The
following functions cannot be issued from the DS Storage Manager in the current
implementation:
Consistency Group operation (FlashCopy and PPRC)
Inband commands over Remote Mirror link
Copy Services Network Components
Customer
Network
DS8000
Processor
Complex 0
DS Storage
Manager
DS CLI
DS API
S-HMC 1
(internal)
(S-HMC 2)
(external)
Ethernet
Switch 2
Ethernet
Switch 1
Processor
Complex 1