IBM 17011RS Maintenance Manual - Page 40

Cache, memory, controller, battery, Diagnostics

Get IBM 17011RS - TotalStorage DS300 Model NAS Server PDF manuals and user guides
UPC - 000435304971
View all IBM 17011RS manuals
Add to My Manuals
Save this manual to your list of manuals

Page 40 highlights

+ SP1 SP2 FC1 FC0 connector connector Fibre Channel RAID controller SCSI Ch3 SCSI Ch4 LINK TX/RX Data Data System DIMM! Cache DIMM! MGMT ETH 0 Management connector LED 9 LED 10 LED 11 LED 12 Figure 16. Fibre Channel RAID controller LEDs and connectors Serial connectors (SP1 and SP2) The serial connectors are for diagnostic purposes only. Management connector The management connector is for ServeRAID Manager function. FC 1 connector The FC 1 connector is for Fibre Channel data transfer. FC 0 connector The FC 0 connector is for Fibre Channel data transfer. SCSI channel 4 SCSI channel 4 can be connected to an IBM EXP400 Storage Expansion Unit. SCSI channel 3 SCSI channel 3 can be connected to an IBM EXP400 Storage Expansion Unit. The Fibre Channel RAID controller has two status LEDs on each of the two Fiber Channel host connectors. Cache memory and RAID controller battery Each RAID controller contains 256 MB of cache memory. It also contains a sealed, rechargeable lithium ion battery that maintains data in the cache for up to three days in the event of a power failure. The service life of the battery is 36 months, after which time the battery should be replaced. For information about replacing the battery, see "Replacing the cache battery in the RAID controller" on page 43. Diagnostics To diagnose problems on the DS400 storage subsystem, use the following diagnostic tools: v ServeRAID Manager software v LEDs and the "Symptom-to-FRU index" on page 27 v Sansurfer Pro (see the DS300 and DS400 Problem Determination Guide) 26 IBM TotalStorage DS300 and DS400: Hardware Maintenance Manual

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
  • 7
  • 8
  • 9
  • 10
  • 11
  • 12
  • 13
  • 14
  • 15
  • 16
  • 17
  • 18
  • 19
  • 20
  • 21
  • 22
  • 23
  • 24
  • 25
  • 26
  • 27
  • 28
  • 29
  • 30
  • 31
  • 32
  • 33
  • 34
  • 35
  • 36
  • 37
  • 38
  • 39
  • 40
  • 41
  • 42
  • 43
  • 44
  • 45
  • 46
  • 47
  • 48
  • 49
  • 50
  • 51
  • 52
  • 53
  • 54
  • 55
  • 56
  • 57
  • 58
  • 59
  • 60
  • 61
  • 62
  • 63
  • 64
  • 65
  • 66
  • 67
  • 68
  • 69
  • 70
  • 71
  • 72
  • 73
  • 74
  • 75
  • 76
  • 77
  • 78
  • 79
  • 80
  • 81
  • 82
Serial
connectors
(SP1
and
SP2)
The
serial
connectors
are
for
diagnostic
purposes
only.
Management
connector
The
management
connector
is
for
ServeRAID
Manager
function.
FC
1
connector
The
FC
1
connector
is
for
Fibre
Channel
data
transfer.
FC
0
connector
The
FC
0
connector
is
for
Fibre
Channel
data
transfer.
SCSI
channel
4
SCSI
channel
4
can
be
connected
to
an
IBM
EXP400
Storage
Expansion
Unit.
SCSI
channel
3
SCSI
channel
3
can
be
connected
to
an
IBM
EXP400
Storage
Expansion
Unit.
The
Fibre
Channel
RAID
controller
has
two
status
LEDs
on
each
of
the
two
Fiber
Channel
host
connectors.
Cache
memory
and
RAID
controller
battery
Each
RAID
controller
contains
256
MB
of
cache
memory.
It
also
contains
a
sealed,
rechargeable
lithium
ion
battery
that
maintains
data
in
the
cache
for
up
to
three
days
in
the
event
of
a
power
failure.
The
service
life
of
the
battery
is
36
months,
after
which
time
the
battery
should
be
replaced.
For
information
about
replacing
the
battery,
see
“Replacing
the
cache
battery
in
the
RAID
controller”
on
page
43.
Diagnostics
To
diagnose
problems
on
the
DS400
storage
subsystem,
use
the
following
diagnostic
tools:
v
ServeRAID
Manager
software
v
LEDs
and
the
“Symptom-to-FRU
index”
on
page
27
v
Sansurfer
Pro
(see
the
DS300
and
DS400
Problem
Determination
Guide
)
Fibre Channel RAID controller
SCSI Ch4
SCSI Ch3
Management
connector
FC0
connector
FC1
connector
+
SP1 SP2
System DIMM!
Cache DIMM!
TX/RX
LINK
MGMT
ETH 0
Data
Data
LED 10
LED 12
LED 9
LED 11
Figure
16.
Fibre
Channel
RAID
controller
LEDs
and
connectors
26
IBM
TotalStorage
DS300
and
DS400:
Hardware
Maintenance
Manual