IBM DCS3860, Installation, User'S, And Maintenance Manual

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Adding a storage enclosure to a running dual-controller
configuration
Note: Ensure that each storage enclosure has two ESMs before you connect it to a
dual-controller DCS3860 storage system. The second ESM must be purchased
separately. Contact your IBM marketing representative or authorized reseller for
more information about purchasing a second ESM. For more information about
installing a second ESM, see the Installation Guide that is shipped with the storage
enclosure.
1. Ensure that the status of the DCS3860 storage system is Optimal.
2.
Use the expansion enclosure Rack Installation Instructions document to install
the new expansion enclosure in the rack.
3. Connect the power cables to the new expansion enclosure and power it on.
4. Connect one end of a SAS cable to the Out (
↓
) SAS connector on the ESM
located in slot A of the earlier/last EXP3800 expansion enclosure in the
configuration.
5. Connect the other end to the In ( ↑ ) SAS connector 1 on the ESM located in slot
A of the EXP3800 expansion enclosure you want to add.
6. Remove the cable from the In (
↑
) SAS connector 1 on the ESM located in slot B
of the earlier/last EXP3800 expansion enclosure and connect it to the In (
↑
) SAS
connector 1 on the ESM located in slot B of the EXP3800 expansion enclosure
you want to add.
7.
Remove the cable from the In (
↑
) SAS connector 2 on the ESM located in slot B
of the earlier/last EXP3800 expansion enclosure and connect it to the In (
↑
) SAS
connector 2 on the ESM located in slot B of the EXP3800 expansion enclosure
you want to add.
AC DC
2
1
I
O
AC DC
2
1
I
O
Lnk Lnk
AC DC
2
1
I
O
AC DC
2
1
I
O
!
ID/Diag
8 8
!
1 2
Lnk Lnk Lnk Lnk
! !
ESM
Lnk Lnk
!
ID/Diag
8 8
!
1 2
Lnk Lnk Lnk Lnk
! !
ESM
!
!
dcsi0050
Figure 21. Connecting the first EXP3800 expansion enclosure
Chapter 3. Cabling the DCS3860 storage system
47