In most PowerVM environments there are multiple HMCs. Typically the same users are required on these HMCs. To prevent having to create users manually on multiple HMCs, the HMCs offer the option of replicating user and configuration data from one HMC to one or more HMCs. If the data replication on the HMCs is configured accordingly, it is sufficient to create a new user just once on one of the HMCs. The new user account is then replicated to the other HMCs.

However, data replication is not limited to user accounts alone. A variety of other configuration data can also be replicated between HMCs. This includes the following data types:

• • pwdpolicy: Password policy configuration
  • user: User accounts
  • kerberos: Kerberos configuration
  • customer: Customer information for call home
  • outbound: Connectivity for call home
  • ldap: LDAP client configuration
  • mfa: Multi-factor authentication

The LPAR tool offers the following commands for configuring and administering data replication:

$ hmc help datarep
USAGE: hmc [<option> ...] <keyword> [<option> ...] [<argument> ...]

Recognized keywords for topic 'datarep' are:
   adddatarep [-v] <hmc> <name>|<IP> [<attributes>]
   chdatarep [-v] <hmc> [<name>|<IP>] <attributes>
   disabledatarep [-v] <hmc>
   enabledatarep [-v] <hmc> [<attributes>]
   lsdatarep [-o <format>] [{-f|-j|-y}] [-F <fields>] [-s <selections>] [{-l|-m}] [-v] <hmc>
   pushdata [-v] <hmc>
   rmdatarep [-v] <hmc> <name>|<IP>
   syncdata [-v] <hmc>
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