HP MSA 2040 Cable Configuration Guide (729691-001, July 2013)

Maximum number of enclosures example: MSA 2040 drive enclosures
The following figure shows an example of an array configuration that demonstrates the maximum
number of enclosures (eight, including the controller enclosure) that are allowed in an array
configuration.
An MSA 2040 array is connected to seven MSA 2040 drive enclosures. Each MSA 2040 drive
enclosure contains 12 drives, and the MSA 2040 LFF controller enclosure contains 12 drives.
Combined, the total number of drives adds up to 96 LFF drives, but no additional enclosures can
be connected, because the maximum of 8 enclosures has already been reached.
NOTE: When connecting more than two drive enclosures, you may be required to purchase
additional 1m or 2m cables. Spanning 6 or 7 enclosures requires a 2m mini-SAS cable to enable
the proper bend radius.
1. MSA 2040 array
enclosure
2. MSA 2040 drive
enclosure
3. MSA 2040 drive
enclosure
4. MSA 2040 drive
enclosure
5. MSA 2040 drive
enclosure
6. MSA 2040 drive
enclosure
7. MSA 2040 drive
enclosure
8. MSA 2040 drive
enclosure
14 Connecting the MSA 2040 array to expansion drive enclosures