Requirements
2-3
Installing a CX200-Series DPE2
EMC supports and can provide 1-, 5-, and 10-meter cables. The 5- and
10-meter cables are equalized.
Interconnections between the CX200 and a disk enclosure should
maintain consistency with the link controller cards (LCCs) in the
additional disk enclosure. For example, SP A interconnects with LCC
A, and SP B interconnects only to LCC B.
Do not leave an unused (that is dangling) cable connected to a host or
enclosure port because it may cause excess noise on the loop.
Addressing
Requirements
Addressing requirements vary between fibre port (fabric) and fibre
loop (FC-AL) environments.
Fabric environments use the Source_ID (SID) and enclosure address
(EA) to address each disk enclosure. A switch in the external Fibre
Channel environment automatically assigns the Source_ID.
FC-AL environments use the FC-AL address ID and the enclosure
address (EA) to address each enclosure.
Enclosure Address
(EA)
Each CX200 DPE2 and DAE2 on a back-end loop needs a unique
enclosure address (EA) that identifies the enclosure and determines
disk module addresses.
The CX200-Series DPE2 has a fixed EA of 0, which you should not change.
The standard CX200 supports one Fibre Channel loop and a
maximum of two disk enclosures (including the CX200 DPE2 itself).
The CX200LC supports a single, non-redundant, integrated loop and
does not support a second disk enclosure. For ease of use, we
recommend that you keep the EAs sequential; a maximum
configuration would therefore include an EA 0 and an EA 1 for the
single CX200 loop (loop 0).
Disk Requirements
CX200 storage systems require at least five disk modules installed in
slots 0, 1, 2, 3, and 4 (the leftmost slots) of the DPE2. Full high
availability that includes write caching requires five disk modules
and an SPS unit. CX200LC storage systems do not support write
caching and require only three disk modules, in slots 0, 1, and 2. Disk
module IDs are numbered left to right (facing the unit) and are
contiguous throughout an array: enclosure 0 contains modules 0-14;
enclosure 1 contains modules 15-29.
Summary of Contents for CX200-Series
Page 4: ...EMC CX200 Series DPE2 Hardware Reference iv ...
Page 42: ...2 18 EMC CX200 Series DPE2 Hardware Reference Installing a CX200 Series DPE2 ...
Page 64: ...3 22 EMC CX200 Series DPE2 Hardware Reference Servicing and Upgrading a CX200 Series DPE2 ...
Page 80: ...A 12 EMC CX200 Series DPE2 Hardware Reference Technical Specifications and Operating Limits ...
Page 86: ...g 6 EMC CX200 Series DPE2 Hardware Reference Glossary ...