Working With Hot-Swap Drives - IBM DS3500 Installation, User's, And Maintenance Manual

20. If the newly inserted controller is in an offline state, see the Storage Manager online help for
instructions on bringing the controller online. If necessary, open the Subsystem Management window
and place the controller online; select the offline controller and click Advanced → Recovery → Place
controller online.
21. Verify the state of the LEDs on the newly inserted controller. See "Controller LEDs" on page 4-9. You
can also use the Subsystem Management window to identify any new faults. Do any storage
subsystems have a fault (Needs Attention) status?
v Yes: Click Recovery Guru in the Subsystem Management window toolbar, and complete the
recovery procedure. If the problem remains, contact your IBM technical-support representative.
v No: Go to step 22.
22. Use the Storage Manager software to print a new storage subsystem profile.

Working with hot-swap drives

This section explains how you can increase the storage subsystem capacity by adding more drives or by
replacing existing drives with ones that have a larger capacity.
Before you begin, complete the following tasks:
v Read the safety information that begins on page "Safety" on page xi and "Handling static-sensitive
devices" on page 2-3.
v Make sure that the current system configuration is working correctly.
v Back up all important data before you make changes to data storage devices.
Before you install or remove drives, review the following information:
v Filler panels: A storage subsystem contains filler panels in the unused drive bays. Before you install
new drives, you must remove these filler panels. Save the filler panels for future use. For proper
cooling and EMC protection, each bay must always contain either a filler panel or a hot-swap drive.
v Drives:
– The DS3500 supports the following drives:
- Up to 12 LFF 3.5–inch 6 Gbps SAS or NL SAS drives (DS3512 and EXP3512)
- Up to 24 SFF 2.5–inch 6 Gbps SAS, NL SAS, or SSD drives (DS3524 and EXP3524)
– For optimum performance, never insert a drive into the storage subsystem without first confirming
the drive firmware level. Contact your IBM technical-support representative for information about
supported drive firmware levels.
– Use of unsupported drives can cause the storage subsystem to fail.
– After you remove a drive, wait 70 seconds before you replace or reseat the drive to allow the drive
to spin down. Failure to do so might cause unpredictable results.
v Drive labels: A label is provided on the front of each drive. Use this label to record the location
information for each drive before you remove it. Be sure to keep a record of the drives and their
corresponding bays. Also, record the location information in "Hard disk drive locations" on page A-1.
If you install a drive in the wrong bay, you might lose data.
v Drive LEDs: Each drive tray has two associated LEDs, a green activity LED and an amber status LED.
These LEDs indicate the status for that drive.
The drive LEDs on the DS3512 storage subsystem and EXP3512 storage enclosure are shown in
Figure 5-9 on page 5-13. The drive LEDs on the DS3524 storage subsystem and EXP3524 storage
enclosure are shown in Figure 5-10 on page 5-13.
5-12
System Storage DS3500 and EXP3500: Installation, User's, and Maintenance Guide