Working With Hot-Swap Ev-Ddms - IBM DS4200 Installation, User's, And Maintenance Manual

18. Verify the state of the LEDs on the newly inserted controller. See "Controller
19. If you also replace the controller cache battery backup unit, reset the battery
20. Use the DS4000 Storage Manager client software to print a new storage

Working with hot-swap EV-DDMs

This section explains how you can increase the storage subsystem capacity by
adding more EV-DDMs or by replacing existing EV-DDMs with ones that have a
larger capacity.
Before you begin, complete the following tasks:
v Read the safety and handling guidelines in "Safety" on page xi and in "Handling
v Ensure that your current system configuration is working properly.
v Back up all important data before you make changes to data storage devices.
Before you install or remove drive CRUs, review the following information:
v Blank trays: A storage subsystem without a full set of EV-DDMs (16) contains
v EV-DDM CRUs:
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IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
If necessary, open the DS4000 Storage Manager Subsystem Management
window and place the controller on-line; select the off-line controller and click
Advanced Recovery
LEDs" on page 91. You can also use the DS4000 Storage Manager client
Subsystem Management window to identify any new faults. Do any storage
subsystems have a fault (Needs Attention) status?
v Yes – Select the Recovery Guru toolbar button in the Subsystem
Management window, and complete the recovery procedure. If the problem
persists, contact your IBM service representative.
v No – Go to step 19.
age in the DS4200 Express Subsystem Management window. Refer to the
online help for instructions on how to reset the battery age, if required.
subsystem profile.
static-sensitive devices" on page 25.
blank trays in the unused drive bays. Before installing new EV-DDMs, you must
remove these empty trays. Save the empty trays for future use. Each of the 16
bays must always contain either a blank tray or a hot-swap EV-DDM.
For proper cooling and EMC protection, do not leave a drive slot open without
either a drive blank or an EV-DDM CRU inserted.
– The DS4200 Express Storage Subsystem drive channel operates at either 2
or 4 Gbps fibre channel interface speed. The DS4200 Express Storage
Subsystem SATA EV-DDM CRUs have an ATA translator card that converts
EV-DDM 3 Gbps SATA drive interface protocol to either 2 Gbps or 4 Gbps
fibre channel interface protocol. It is recommended that the DS4200 Express
enclosure speed is set at 4 Gbps when these SATA EV-DDM CRUs are
installed and connected to storage expansion enclosures running at 4 Gbps
speed. The Link Rate setting speed must be set accordingly. See "Verifying
the Link Rate setting " on page 120 for more information.
– When adding EV-DDM CRUs, if you are not installing all 16 EV-DDM CRUs
into the storage subsystem, install the EV-DDM CRUs from left to right
consecutively.
– For optimum performance, never insert a EV-DDM into a storage subsystem
without first confirming its drive firmware level. In the event of a drive firmware
mismatch, schedule down time as soon as possible to upgrade the drive
Place controller online.