IBM Power Systems Series Manuel utilisateur

Power Systems

SAS subsystem for the 8202-E4C,

8202-E4D, 8205-E6C, or 8205-E6D

IBM

Power Systems

SAS subsystem for the 8202-E4C,

8202-E4D, 8205-E6C, or 8205-E6D

IBM

Note

Before using this information and the product it supports, read the information in “Safety notices” on page v, “Notices” on

page 17, the IBM Systems Safety Notices manual, G229-9054, and the IBM Environmental Notices and User Guide, Z125–5823.

This edition applies to IBM Power Systems servers that contain the POWER7 processor and to all associated

models.

US Government Users Restricted Rights – Use, duplication or disclosure restricted by GSA ADP Schedule Contract

with IBM Corp.

Contents

Safety notices ................................. v

SAS subsystem for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D ......... 1

What's new in SAS subsystem for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D ............ 1

SAS architecture .................................. 1

SAS subsystem overview for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D............. 1

SAS storage configurations .............................. 5

SAS subsystem base configuration for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D ......... 6

SAS base subsystem with two-way split drive backplane for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D .. 7

SAS dual-RAID subsystem for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D ............ 9

SAS dual-RAID subsystem with internal drives for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D .... 9

SAS dual-RAID subsystem with external drives for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D.... 11

SAS subsystem service considerations for the 8202-E4C, 8202-E4D, 8205-E6C, or 8205-E6D ......... 13

Service considerations for the cache battery pack ...................... 14

Problem determination and recovery ........................... 16

Notices ................................... 17

Trademarks ................................... 18

Electronic emission notices .............................. 18

Class A Notices ................................. 18

Class B Notices ................................. 22

Terms and conditions ................................ 25

iv SAS subsystem

Safety notices

Safety notices may be printed throughout this guide:

vDANGER notices call attention to a situation that is potentially lethal or extremely hazardous to

people.

vCAUTION notices call attention to a situation that is potentially hazardous to people because of some

existing condition.

vAttention notices call attention to the possibility of damage to a program, device, system, or data.

World Trade safety information

Several countries require the safety information contained in product publications to be presented in their

national languages. If this requirement applies to your country, safety information documentation is

included in the publications package (such as in printed documentation, on DVD, or as part of the

product) shipped with the product. The documentation contains the safety information in your national

language with references to the U.S. English source. Before using a U.S. English publication to install,

operate, or service this product, you must first become familiar with the related safety information

documentation. You should also refer to the safety information documentation any time you do not

clearly understand any safety information in the U.S. English publications.

Replacement or additional copies of safety information documentation can be obtained by calling the IBM

Hotline at 1-800-300-8751.

German safety information

Das Produkt ist nicht für den Einsatz an Bildschirmarbeitsplätzen im Sinne § 2 der

Bildschirmarbeitsverordnung geeignet.

Laser safety information

IBM®servers can use I/O cards or features that are fiber-optic based and that utilize lasers or LEDs.

Laser compliance

IBM servers may be installed inside or outside of an IT equipment rack.

DANGER

When working on or around the system, observe the following precautions:

Electrical voltage and current from power, telephone, and communication cables are hazardous. To

avoid a shock hazard:

vConnect power to this unit only with the IBM provided power cord. Do not use the IBM

provided power cord for any other product.

vDo not open or service any power supply assembly.

vDo not connect or disconnect any cables or perform installation, maintenance, or reconfiguration

of this product during an electrical storm.

vThe product might be equipped with multiple power cords. To remove all hazardous voltages,

disconnect all power cords.

vConnect all power cords to a properly wired and grounded electrical outlet. Ensure that the outlet

supplies proper voltage and phase rotation according to the system rating plate.

vConnect any equipment that will be attached to this product to properly wired outlets.

vWhen possible, use one hand only to connect or disconnect signal cables.

vNever turn on any equipment when there is evidence of fire, water, or structural damage.

vDisconnect the attached power cords, telecommunications systems, networks, and modems before

you open the device covers, unless instructed otherwise in the installation and configuration

procedures.

vConnect and disconnect cables as described in the following procedures when installing, moving,

or opening covers on this product or attached devices.

To Disconnect:

1. Turn off everything (unless instructed otherwise).

2. Remove the power cords from the outlets.

3. Remove the signal cables from the connectors.

4. Remove all cables from the devices.

To Connect:

1. Turn off everything (unless instructed otherwise).

2. Attach all cables to the devices.

3. Attach the signal cables to the connectors.

4. Attach the power cords to the outlets.

5. Turn on the devices.

(D005)

DANGER

vi SAS subsystem

Observe the following precautions when working on or around your IT rack system:

vHeavy equipment–personal injury or equipment damage might result if mishandled.

vAlways lower the leveling pads on the rack cabinet.

vAlways install stabilizer brackets on the rack cabinet.

vTo avoid hazardous conditions due to uneven mechanical loading, always install the heaviest

devices in the bottom of the rack cabinet. Always install servers and optional devices starting

from the bottom of the rack cabinet.

vRack-mounted devices are not to be used as shelves or work spaces. Do not place objects on top

of rack-mounted devices.

vEach rack cabinet might have more than one power cord. Be sure to disconnect all power cords in

the rack cabinet when directed to disconnect power during servicing.

vConnect all devices installed in a rack cabinet to power devices installed in the same rack

cabinet. Do not plug a power cord from a device installed in one rack cabinet into a power

device installed in a different rack cabinet.

vAn electrical outlet that is not correctly wired could place hazardous voltage on the metal parts of

the system or the devices that attach to the system. It is the responsibility of the customer to

ensure that the outlet is correctly wired and grounded to prevent an electrical shock.

CAUTION

vDo not install a unit in a rack where the internal rack ambient temperatures will exceed the

manufacturer's recommended ambient temperature for all your rack-mounted devices.

vDo not install a unit in a rack where the air flow is compromised. Ensure that air flow is not

blocked or reduced on any side, front, or back of a unit used for air flow through the unit.

vConsideration should be given to the connection of the equipment to the supply circuit so that

overloading of the circuits does not compromise the supply wiring or overcurrent protection. To

provide the correct power connection to a rack, refer to the rating labels located on the

equipment in the rack to determine the total power requirement of the supply circuit.

v(For sliding drawers.) Do not pull out or install any drawer or feature if the rack stabilizer brackets

are not attached to the rack. Do not pull out more than one drawer at a time. The rack might

become unstable if you pull out more than one drawer at a time.

v(For fixed drawers.) This drawer is a fixed drawer and must not be moved for servicing unless

specified by the manufacturer. Attempting to move the drawer partially or completely out of the

rack might cause the rack to become unstable or cause the drawer to fall out of the rack.

(R001)

Safety notices vii

CAUTION:

Removing components from the upper positions in the rack cabinet improves rack stability during

relocation. Follow these general guidelines whenever you relocate a populated rack cabinet within a

room or building:

vReduce the weight of the rack cabinet by removing equipment starting at the top of the rack

cabinet. When possible, restore the rack cabinet to the configuration of the rack cabinet as you

received it. If this configuration is not known, you must observe the following precautions:

– Remove all devices in the 32U position and above.

– Ensure that the heaviest devices are installed in the bottom of the rack cabinet.

– Ensure that there are no empty U-levels between devices installed in the rack cabinet below the

32U level.

vIf the rack cabinet you are relocating is part of a suite of rack cabinets, detach the rack cabinet from

the suite.

vInspect the route that you plan to take to eliminate potential hazards.

vVerify that the route that you choose can support the weight of the loaded rack cabinet. Refer to the

documentation that comes with your rack cabinet for the weight of a loaded rack cabinet.

vVerify that all door openings are at least 760 x 230 mm (30 x 80 in.).

vEnsure that all devices, shelves, drawers, doors, and cables are secure.

vEnsure that the four leveling pads are raised to their highest position.

vEnsure that there is no stabilizer bracket installed on the rack cabinet during movement.

vDo not use a ramp inclined at more than 10 degrees.

vWhen the rack cabinet is in the new location, complete the following steps:

– Lower the four leveling pads.

– Install stabilizer brackets on the rack cabinet.

– If you removed any devices from the rack cabinet, repopulate the rack cabinet from the lowest

position to the highest position.

vIf a long-distance relocation is required, restore the rack cabinet to the configuration of the rack

cabinet as you received it. Pack the rack cabinet in the original packaging material, or equivalent.

Also lower the leveling pads to raise the casters off of the pallet and bolt the rack cabinet to the

pallet.

(R002)

(L001)

(L002)

viii SAS subsystem

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