H3C Technologies H3C Intelligent Management Center - Manual (Page 12)

5
2 Preparing for installation
The following information describes IMC installation requirements for both hardware and software.
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 2.0 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
CPU1
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
30 GB
5 K to 50 K 10 60 GB
200 to
500
0 to 10 K 30
4 cores
• Wind
ows:
6 GB
• Linux:
8 GB
1 GB 3 GB
50 GB
10 K to 100 K 10 100 GB