IBM Partner Pavilion DS4100 Benutzerhandbuch

the

DS4000

storage

expansion

units

attached

to

the

DS4100

storage

server

should

be

plugged

into

the

same

two

independent

external

power

circuits

as

the

DS4100.

This

ensures

that

the

DS4100

storage

server

and

all

its

attached

storage

expansion

units

will

have

power

if

only

one

power

circuit

is

available.

In

addition,

having

all

the

right

or

all

the

left

power

supplies

plug

into

the

same

power

circuit

enables

the

components

in

the

storage

subsystem

to

power

on

simultaneously

during

an

unattended

restoration

of

power.

See

for

an

example

of

redundant

power

connections.

Note:

This

guideline

cannot

be

followed

for

the

DS4100

single-controller

storage

server,

which

does

not

offer

redundant

power

supplies.

However,

you

can

use

Uninterruptible

Power

Supply

(UPS)

units

with

the

DS4100

single-controller

storage

server

to

provide

protection

against

power

brown-outs

and

short

power

outages.

v

Before

any

planned

system

shutdown

or

after

any

system

additions,

removals,

or

modifications

(including

logical

drive

creations,

storage

partitioning

definitions,

hardware

changes,

and

so

on),

save

the

storage

subsystem

profile

as

explained

in

the

DS4000

Storage

Manager

guide

for

your

operating

system.

Save

the

profile

in

a

location

other

than

the

logical

drives

created

for

the

DS4100

storage

server.

v

Ensure

that

your

system

is

in

an

optimal

state

before

you

shut

it

down.

Never

turn

the

power

off

if

any

fault

light

is

lit;

be

sure

to

resolve

any

error

conditions

before

you

shut

down

the

system.

v

During

any

maintenance

or

attended

power-up

procedure,

carefully

follow

the

power-up

sequence

listed

in

Check

that

each

component

of

the

subsystem

is

powered-on

in

the

proper

order

during

this

entire

power-up

procedure

to

ensure

the

controller

will

be

able

to

optimally

access

all

of

your

storage

subsystems.

v

The

storage

subsystem

supports

simultaneous

power-up

to

the

system

components;

however,

you

should

always

follow

the

power-up

sequence

listed

in

during

any

attended

power-up

procedure.

v

A

storage

system

in

an

optimal

state

should

recover

automatically

from

an

unexpected

shutdown

and

unattended

simultaneous

restoration

of

power

to

system

components.

After

power

is

restored,

call

IBM

support

if

any

of

the

following

conditions

occur:

–

The

storage

subsystem

logical

drives

and

arrays

are

not

displayed

in

the

DS4000

Storage

Manager

graphical

user

interface

(GUI).

–

The

storage

subsystem

logical

drives

and

arrays

do

not

come

online.

–

The

storage

subsystem

logical

drives

and

arrays

seem

to

be

degraded.

Storage

server

components

The

following

sections

show

the

components

of

the

DS4100

storage

server.

Hot-swappable

devices

enable

you

to

maintain

the

availability

of

your

system

while

you

remove,

install,

or

replace

a

hot-swap

device.

All

DS4100

storage

server

models

support

hot-swap

SATA

hard

disk

drives

and

cooling

fan

CRUs,

so

you

can

remove

and

replace

these

components

without

turning

off

the

storage

server.

In

addition,

the

DS4100

base

storage

server

supports

hot-swap

RAID

controllers

and

power

supplies.

Chapter

1.

Introduction

7