Replacing A Midplane Assembly; System Storage Ds3500 And Exp3500: Installation, User's, And Maintenance Guide; Removing An Environmental Service - IBM DS3500 Installation, User's, And Maintenance Manual

ESM
Release
levers
E S
M
1
2
Figure 5-24. Removing an environmental service module
5. Slide the ESM out of the bay and set it aside.
6. Make sure that the release levers on the ESM are in the open position.
7. Slide the ESM into the bay until it stops.
8. Push the release levers to the closed position.
9. Connect the cable to the ESM.
10. Turn on the power. For more information, see "Turning on the storage subsystem" on page 4-2.
11. Go to http://www.ibm.com/servers/storage/support/ to check for ESM code updates. For more
information, see the download instructions on page 1.

Replacing a midplane assembly

The midplane assembly must be replaced only by a trained service provider.
To replace the midplane assembly, complete the following steps.
Attention: To prevent data loss, you must shut down the storage subsystem or storage enclosure before
you begin the procedure to replace the midplane assembly.
1. Read the safety information that begins on page "Safety" on page xi and "Best practices guidelines"
on page 1-7.
2. (DS3512 and DS3524) Turn off the storage subsystem (see "Turning off the storage subsystem" on
page 4-14).
3. Remove the drives (see "Removing a hard disk drive" on page 5-13).
4. Remove the power supplies (see "Replacing an ac power supply" on page 5-21).
5. (DS3512 and DS3524) Remove the controllers (see "Removing a controller" on page 5-2).
6. (EXP3512 and EXP3524) Remove the ESMs (see "Replacing an ESM" on page 5-37).
7. (DS3512 AND EXP3512) Replace the midplane assembly.
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System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide