90
Updated
28/02/01
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Clustering is a group of interconnected computers used as a single, unified computing resource. Clustering Netfinity servers, like the IBM Netfinity 8500R, provides a high availability solution to keep you in
touch with the key applications you need to run your business.
This sample configuration consists of paired IBM Netfinity 8500R cluster nodes equipped with eight-way SMP capability and redundant power supplies. Microsoft Cluster Service (MSCS) has been validated on
IBM Netfinity 8500R servers, using the Netfinity ServeRAID-4H with the EXP300 Storage Expansion Unit. MSCS allows two configured servers, referred to as nodes, to be connected together to form a cluster.
Providing system redundancy means that a complete server can fail and client access to server resources is largely unaffected. MSCS extends this theme by also allowing for software failures at an application
level as well as an operating system level. If the operating system fails, all applications and services can be restarted on another server, and if just one application fails, it can be managed by MSCS individually.
An additional independent network connection is used to perform monitoring within the cluster. One or more disk subsystems are attached to both nodes. In the above example, a Netfinity EXP300 was selected
and the Netfinity ServeRAID-4H Ultra2 SCSI Adapters provide the I/O control. Netfinity ServeRAID-4H handles the “SCSI heartbeat” connection without the need for a dedicated SCSI connection and logically
attaches the quorum disk, which allows arbitration when a failure occurs. Additional information on IBM Netfinity and IBM PC Server Clustering Solutions may be found on the World Wide Web by accessing
URL www.ibm.com/pc/ww/eserver/xseries/clustering/index.html
Two Node High Availability Cluster
Part Number Description Quantity Usage
Server Nodes A & B
18RYNxx Netfinity 8500R 700MHz/2 MB, 512MB, Open 2 Power redundancy standard
10K2166 700MHz/2MB Upgrade with Pentium III Xeon Processor 10 Total of 6 SMP processors per node
10K2335 Netfinity 4X Accelerator Filter 2 Required for greater than 4 processors
10K2337 Netfinity Mezzanine Expansion Kit 2 Required for greater than 4 processors
20L0247 Netfinity 256MB SDRAM ECC RDIMM II 16 Total of over 2GB of memory per node
28L4454 Netfinity 8500R Memory Expansion Card 2 Enables cache line interleaving
34L1501 Netfinity 10/100 Ethernet Adapter 2
1
4 1 for crossover, 1 for public LAN/node
37L6889 ServeRAID-4H Ultra160 SCSI Controller
2
2 RAID controller - NOS plus EXP300
37L7201 9.1GB Ultra160 SCSI Hot-Swap SL HDD 4 NOS mirroring
37L6862 APC Smart-UPS 5000RMiB 2 -
External Storage
03K8756 NetMEDIA Storage Expansion Unit EL (3U) 1 External Tape Drive Enclosure
03K9311 Netfinity 4.2M Ultra2 SCSI Cable
3
1 Tape Enclosure to onboard SCSI
00N7990 40/80GB DLT Internal SCSI Tape Drive 1 Installs in NetMEDIA Enclosure
19K11xx Netfinity EXP300 Storage Expansion Unit (3U)
2
1 Provides additional 14 bays
03K9311 Netfinity 4.2M Ultra2 SCSI Cable
2, 3
2SRAID to EXP300
37L7204 9.1GB 10K-4 Ultra160 SCSI Hot-Swap SL HDD 14 RAID 5 shared storage in EXP300
Shared (or single occurrence) Resources
11AG1xx T54A Flat Panel Color Monitor (15.0” Viewable Image Size), stealth black 1 Mounts in keyboard tray
28L36xx Space Saver Keyboard 1 -
Rack Options
930842P Netfinity Enterprise Rack 1 -
37L6888 Netfinity Flat Panel Monitor Rack-Mount Kit (3U) 1 Mounts in keyboard tray
28L4707 Netfinity Rack Keyboard Tray 1 -
28L0542 Netfinity Console Server Selector Switch (4-port) 1 -
94G7448 Power Cable-Type C12 4 -
94G7447 NetBay Console Cable Set 12ft 2 -
94G6670 Blank Filler Panel Kit 1 -
1. Requires customer supplied Ethernet Crossover Cable which may vary in length up to a maximum of 25 feet (7.6 m).
2. By replicating these items, up to a total quantity of four ServeRAID-4H Adapters (plus options) and eleven EXP300s can provide over 2 Terabytes of storage. Additional power and rack space will be
required.
3. Cable length requirements are dependent on component placement within the rack or rack suite. To determine specific configuration requirements use the Netfinity Rack and/or Spreadsheet Configurators
which can be downloaded from Web site www.ibm.com/pc/europe/configurators
CH1CH2CH3
ServeRAID 4H
(P/N 37L6889)
10/100 Ethernet (34L1501)
10/100 Ethernet (34L1501)
Server Node A
CH1CH2CH3
ServeRAID 4H
(P/N 37L6889)
10/100 Ethernet (34L1501)
Public LAN
Server Node B
Two Node High Availability Cluster
Netfinity EXP300
(03K9311)
Ethernet Crossover
Cable
1
1.Customer supplied Ethernet Crossover Cable may vary in length up to a maximum of 25 feet (7.6 m).
Public LAN
10/100 Ethernet (34L1501)
(2 m cable std.
on EXP300)
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