Cu Images, Lvis, And Logical Units; Cu Images; Logical Volume Images - Hitachi Virtual Storage Platform User And Reference Manual

Figure 2-5 LDEV Striping Across 4 RAID 5 (7D+1P) Array Groups
All data drives and device emulation types are supported for LDEV striping.
LDEV striping can be used in combination with all Virtual Storage Platform
data management functions.

CU images, LVIs, and logical units

This section provides information about control unit images, logical volume
images, and logical units.

CU images

The Virtual Storage Platform is configured with one control unit image for
each 256 devices (one SSID for each 64 or 256 LDEVs) and supports a
maximum of 255 CU images in the primary logical disk controller (LDKC).
The Virtual Storage Platform supports the following control unit (CU)
emulation types:
• 3990-6, 3990 6E
• 2105, 2107
The mainframe data management features of the Virtual Storage Platform
may have restrictions on CU image compatibility.
For further information on CU image support, refer to the Mainframe Host
Attachment and Operations Guide, or contact your Hitachi Data Systems
Corporation account team.

Logical volume images

The Virtual Storage Platform supports the following mainframe LVI types:
• 3390-3, -3R, -9, L, and -M. The 3390-3 and 3390-3R LVIs cannot be
intermixed in the same storage system.
• 3380-3, -F, -K. The use of 3380 device emulation is restricted to Fujitsu
environments.
2–6
Functional and Operational Characteristics
Hitachi VSP User and Reference Guide