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Dell PowerVault MD 34XX/38XX Series Storage Arrays CLI Guide

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Set RAID controller NTP settings

Description

The set controller NTPServers command sets the NTP settings for the controller so the RAID controller can automatically synchronize the clocks with an external host using SNTP (Simple Network Time Protocol). When this feature is enabled, the RAID controller periodically queries the configured NTP server, then uses the results to update its internal time-of-day clock. If only one RAID controller has NTP enabled, the alternate RAID controller will periodically synchronize its clock with the RAID controller that has NTP enabled. If neither RAID controller has NTP enabled, the RAID controllers periodically synchronize their clocks with each other.

Before you begin

  • NOTE: This command is RAID controller-specific. It is not necessary to configure NTP on both RAID controllers; however, doing so improves the array's ability to stay synchronized during hardware or communication failures.
  • CAUTION: If you configure NTP using a fully qualified domain name, you must also configure DNS on those RAID controller(s) for the operation to succeed.

Syntax

set controller[0|1] NTPServers=(disabled|auto|(Address1 [Address2]))

Parameters

Table 1. RAID Controller NTP settings parameters
Parameter Description
Controller The RAID controller for which you want to change the NTP settings. Valid controller identifiers are 0 or 1.
NTPServers This parameter configures the NTP servers for the RAID controller.
  • Specify disabled to turn off NTP support.
  • Specify auto to use the NTP server addresses provided by a DHCP server.
    • NOTE: This option should only be used if at least one management port on the RAID controller is set to get interface parameters using DHCP, and at least one NTP server is configured on the DHCP server.
  • Otherwise, specify a whitespace separated list of one or two NTP servers. The addresses may be a domain name, IPv4 address, or IPv6 address. If specifying more than one address, the address types do not need to match. If more than one address is specified, they will be used in the order they are specified (first is primary, second is backup).
    • NOTE: Surround the NTP server name with quotes, as shown in the Examples section.
Address “DomainName"|IPv4Address|IPv6Address
  • NOTE: If a domain name is specified, a DNS server must also be configured to allow the controller to resolve the server IP address.

Examples

set controller[0] NTPServers=disabled;

set controller[0] NTPServers=auto;

set controller[0] NTPServers=("0.pool.ntp.org" "1.us.pool.ntp.org");

set controller[1] NTPServers=(192.168.1.105 "1.us.pool.ntp.org");

set controller[1] NTPServers=(2001:0db8:85a3:0000:0000:8a2e:0370:7334);

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