Ntp Configuration; Method Of Operating Ntp In Primequest 2000 Series; Ca92344-0536-04 - Fujitsu PRIMEQUEST 2000 Series Installation Manual

CHAPTER 6 Work after installation

6.2 NTP Configuration

6.2 NTP Configuration
This section describes the operation method in the PRIMEQUEST 2000 series, regarding the operation of time correction
wherein Network Time Protocol (NTP) is used.
NTP is the protocol which provides the method by which time information is exchanged between the computers of same
type. The time correction function references the correct time on another system at system startup. Then, it sets the time
and keeps it within the specified error range.
At that time, system with original time is called as NTP server and the reference system is called as NTP client. In the NTP
server, it is necessary to activate the NTP service, for responding to the request from the NTP client.
In case of the operation of time correction which is used in NTP, when the operating system is Windows, see "Appendix E
Specifications and setting of NTP server (Windows)"
For usage conditions and notes of Extended Partitioning function, see "3.2.1 Extended Partitioning" of PRIMEQUEST 2000
Series Administration Manual (CA92344-0537).
All the windows given here are the display examples. Contents displayed according to system configuration are different.

6.2.1 Method of operating NTP in PRIMEQUEST 2000 series

This explains the method of time correction of each partition where NTP in the PRIMEQUEST 2000 series is used.
In the PRIMEQUEST 2000 series, there are two types of objects which set the time.
- MMB
- Each partition
For the details regarding the NTP client of MMB, see "6.2.2. Specification of NTP server"
Time of each partition is corrected by setting the NTP client of the operating system which is installed.
For the stable NTP operation, specify multiple (In case of RHEL, three servers or more) NTP servers from each NTP client.
Schematic diagram of operation when NTP server other than MMB is used is shown in "Figure 7.2 Operation diagram
when external NTP server is used (Case when 3 NTP servers are used).
Note
Match the stratum (Stratum) while using multiple NTP servers.
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