IBM 5147-024 Manual page 28

Figure 12. Mode sticker locations at the rear of the 5147-024, ESLL, or ESLS storage enclosure
3. Ensure that all adapters that you need to connect to the 5147-024, ESLL, or ESLS storage enclosure
are installed in the system or expansion unit. If the adapters are not installed, complete the adapter
installation procedure for your system or expansion unit before you continue with this task. For
instructions, see PCIe adapters (http://www.ibm.com/support/knowledgecenter/POWER8/p8hak/
pciadapters.htm).
4. If the system requires an internal cable to be installed to produce an external SAS port for connection
with the enclosure, confirm that the installation was completed.
Remember: When you install or confirm the use of an external SAS port, record the location of the
external SAS port on the system. Later in this procedure, you are instructed to install the external
SAS cable to this system connector location.
5. Determine the configuration that you will use to cable the SAS adapter to the 5147-024, ESLL, or
ESLS storage enclosure. The following list shows some of the common connections, but not all
possible connection options. For more configuration options, see Planning for serial-attached SCSI
cables (http://www.ibm.com/support/knowledgecenter/POWER8/p8had/p8had_sascabling.htm).
Notes:
v The 5147-024 storage enclosure attaches to your system with AA12 cables (or other straight cables).
v The ESLL or ESLS storage enclosure attaches to your system with YO12 or X12 cables.
v If you use a YO12 cable to attach the ESLL or ESLS storage enclosure to the rear SAS ports of the
system model 8247-21L, 8247-22L, 8247-42L, 8284-21A, 8284-22A, 8286-41A, or 8286-42A, the SAS
YO12 cable must not exceed the maximum supported length of 3 m (9.8 ft).
v If you are working on a 5147-024, use a mode 1 connection by using two AA12 or other straight
cables to two SAS adapters.
v A mode 1 connection of one ESLL or ESLS storage enclosure by using a YO12 cable to a single
SAS adapter.
v A mode 1 connection of two ELLL or ESLS storage enclosures by using a YO12 cables to a single
SAS adapter.
v A mode 1 connection of one ESLL or ESLS storage enclosure by using a YO12 cables to a SAS
adapter pair.
v A mode 1 connection of two ELLL or ESLS storage enclosures by using a YO12 cables to a SAS
adapter pair.
12
Power Systems: Installing the Model 024, ESLL, or ESLS storage enclosure