EMC VMAX3

The list of EMC products SHC-OSD supports can be found in the release notes.

A detailed description of VMAX3 is provided in the EMC documentation.

Under SHC-OSD, VMAX3 offers the same functions as the other Symmetrix systems, and is operated with the same commands.

However, VMAX3 differs from its predecessors in the major points described below. The effects on working with SHC-OSD are also described.

VMAX3 is implemented completely with thin provisioning

See section "Virtual provisioning (VMAX3)".

VMAX3 has 5-character internal device numbers

In VMAX3 the internal device numbers have been increased from 4 to 5 characters. The device numbers are specified in ascending order from 00000 to FFFFF. This increases the maximum number of devices from 64,000 to 1,024,000. The internal data devices for mapping the thin pools are configured in descending order from FFFFF.

BS2000 currently (as previously) supports at most 4-character device numbers, i.e. the number range from 00000 through 0FFFF. The maximum number of devices thus remains unchanged at 64,000.

The LOGICAL-VOLUME operand of the /SHOW-SYMMETRIX-DEVICE-CONFIG command accepts 5-character device numbers for VMAX3. The information outputs of the SHOW commands and the messages of SHC-OSD display 5-character device numbers for VMAX3.

The LOGICAL-VOLUME operands of the other commands of SHC-OSD still accept only 4-character device numbers for all storage systems.

VMAX3 supports multiple ports per remote link director

VMAX3 with the HYPERMAX operating system supports a variable number of ports per remote link director.

For the display, the format <director_name>:<port_number> is used in the SHC-OSD information output, e.g. 2E:11 for port 11 on director 2E.
In the action commands of SHC-OSD the input of this combination takes place using the operands DIRECTOR (as is already the case) and PORT (new for VMAX3).

The Fibre Channel adapter (FC director) and the remote adapter (remote link director) are important for SHC-OSD:

• An FC director supports up to 32 ports (Symmetrix: max. 4 ports per FC director).
  All 32 ports are output with their connection status when /SHOW-SYMMETRIX-CONFIGURATION INFORMATION=*DIRECTORS is issued.

• A remote link director can support up to 32 ports (Symmetrix: max. one port per remote link director).
  All ports are output with their properties when /SHOW-SYMMETRIX-CONFIGURATION INFORMATION=*REMOTE-LINK-DIRECTORS or /SHOW-REMOTE-COPY-STATUS INFORMATION=*LINK-STATUS is issued.

VMAX3 knows only dynamic SRDF

Remote copy pairs can be preconfigured statically in VMAX3 and higher.

All generated volumes can be used as source or target units for SRDF. The remote copy pairs must be configured dynamically with the SHC-OSD command /START-REMOTE-COPY (dynamic remote copy pairs).

In the command output of /SHOW-SYMMETRIX-DEVICE-CONFIG the SRDF devices are identified in the REM-COPY column with D (dynamically configured).

VMAX3 and adaptive copy (SRDF)

The /MODIFY-REMOTE-COPY-PARAMETER and /START-REMOTE-COPY commands are rejected with the message NDE1019 if the COPY-MODE=*ADAPTIVE-COPY(WRITE-BUFFER=*CACHE operand is specified and the source unit resides on a VMAX3.