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2 preparing for installation, Hardware requirements – H3C Technologies H3C Intelligent Management Center User Manual

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2 Preparing for installation

The following information describes the requirements that all IMC servers must meet.
H3C recommends using a 64-bit operating system on all IMC servers.

Hardware requirements

The following terms are used:

Node—IMC servers, database servers, and devices managed by IMC are called "nodes".

Collection unit—Represents a performance instance collected every 5 minutes. When a
performance instance uses another collection interval, it corresponds to a number of collection units

calculated with the formula: 5 minutes/instance collection interval in minutes.
For example, the collection interval is set to 10 minutes for all performance instances. A monitored
device contains 1 CPU, 1 memory bar, and 10 interfaces. To collect performance data for CPU,

memory, response time, reachability rate, and interface send and receive rates, the total collection
units of the device are: (1+1+1+1+(10×2))×5/10=12.

CPU

1

—The frequency of the CPU must be no less than 2.5 GHz.

Java heap size—Maximum memory size to be used by Java processes on the IMC Web Server.

Optimal hardware requirements vary with scale, other management factors, and are specific to each

installation. Please consult H3C, or your local account teams for precise requirements. If service

components are added to the IMC Platform, be sure to read the release notes of each component.
To improve the I/O performance, follow these guidelines:

When the number of the collection units is from 100 K to 200 K, install two or more disks and a

RAID card with a cache of 256 MB or more.

When the number of collection units is from 200 K to 300 K, install two or more disks and a RAID
card with a cache of 512 MB or more.

When the number of collection units is 300 K to 400 K, install four or more disks and a RAID card
with a cache of 1 GB or more.

H3C recommends that you set the RAID level to 0. When you want to set the RAID level to 5 or 10,
install the proper number of parity disks.

Table 2 Server requirements for 32-bit operating systems

Management scale

System minimum requirements

Nodes

Collection

units

Online

operator

s

CPU

1

Server

memory

Max.

Java

heap

Storage

required

for

installation

Storage

required

for

operation

0 to 200

0 to 5 K

20

2 cores

4 GB

512
MB

3 GB

50 GB

5 K to 50 K

10

60 GB

200 to 500 0 to 10 K

30

4 cores

Windo

1 GB

3 GB

50 GB