Device Emulation Intermix; Figure 2.8 Sample Device Emulation Intermix - Hitachi 9900 User And Reference Manual

2.4.3

Device Emulation Intermix

The 9900 subsystem supports an intermix of different device emulations (e.g., 3390-x LVIs,
3380-x LVIs, OPEN-x LUs) on the same ACP pair. Figure 2.8 illustrates an intermix of device
emulation types. The only requirement is that the devices within each array group must
have the same type of track geometry or format, as follows:
3390-1, -2, -3 or -9 can be intermixed within an array group.
3380-E, -J, or -K can be intermixed within an array group.
OPEN-3, -8, -9, -E, -L, and -M can be intermixed within an array group with the following
restrictions:
– OPEN-L devices can only be configured on array groups of 73, 146, or 180 GB HDDs.
– OPEN-M devices can only be configured on array groups of 47 or 180 GB HDDs.
OPEN-K cannot be intermixed with other device types within an array group.
Note: For the latest information on supported LU types and intermix requirements, please
contact your Hitachi Data Systems account team.
Note: The 9960 and 9910 subsystems may support different device emulations and intermix
configurations.
Disk Array
Unit
Figure 2.8 Sample Device Emulation Intermix
26 Chapter 2 Subsystem Architecture and Components
Disk Array Disk Array
Unit Unit
3390-9
3390-3
3380-K
9900 Disk Array
Controller Unit
4th 2nd
ACP ACP
Pair Pair
3rd 1st
ACP ACP
Pair Pair
OPEN-3
3390-9
OPEN-9
Disk Array Disk Array
Unit Unit