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Chapter 28. Interoperability between DS6000 and DS8000 417
– In a mixed environment, one system is the source (local) and one is the target. If you
want to be able to manage the PPRC paths and pairs from either machine, then you
need network connectivity between the DS6000 SMC and the DS8000 HMC. If you
use DS CLI, the SMC and HMC do have to be able to communicate with each other,
but the DS CLI machine must be able to communicate with both the HMC and the
SMC.
– If you do not plan to use the remote system as a source and you do not intend to use
the DS Storage Manager GUI to manage the pairs and paths, then network
connectivity to the remote machine (assuming the remote machine is at a remote site)
is not necessary. This is because, when you use the DS CLI, all path and pair
establishment is done by connecting to the source machine (the local machine). In a
disaster recovery scenario, you will have travel to the remote site to perform
management tasks for the remote machine. This setup is not recommended because it
is less flexible.
28.2.4 Creating matching user IDs and passwords
When you want to use the DS CLI or DS GUI to perform Copy Services operations, you must
authenticate with a valid user ID and password. When you use the DS6000 DS GUI to
perform an operation that requires it to issue a command to a DS8000, it must authenticate
with the DS8000. The DS user ID and password that you used to log on to the DS6000 DS
GUI is used to authenticate with the DS8000 HMC. The same applies if you use the DS8000
DS GUI to manage a DS6000. This means that the same user ID and password must be
defined in both the SMC and the HMC. This task must be manually performed. If, instead of
the DS GUI, you only use the DS CLI, then this requirement does not exist. However, it is still
of benefit to use a matching user ID and password to manage machines in either Storage
Complex.
28.2.5 Updating the DS CLI profile
If you plan to use the DS CLI to manage your mixed environment, you can create a profile to
simplify your connection to the DS CLI, commands, and script operations. To achieve this,
add extra lines as shown in Example 28-1. In this example, the DS6000 is considered the
local system, while the DS8000 is considered the remote system.
Example 28-1 Possible modification to a DS CLI profile
# DS6000
# hmc1 is the DS6000 SMC
hmc1: 10.0.0.100
# devid is the serial number of the DS6000
devid: IBM.1750-1300247
# remotedevid is the serial number of the DS8000
remotedevid: IBM.2107-7503461
# Username is a user created on the ESS Specialist that matches the userid on the DS6000
username:admin
# The password for the admin user id.
Placing it here is not very secure.
password:passw0rd
# The password file is created using the managepwfile and is a better way to manage this.
# pwfile:security.dat
Note: A DS8000 Storage Complex is made of up of either one or two HMCs that together
manage one or two DS8000 Storage Units. A DS6000 Storage Complex consists of either
one or two SMCs that together manage one or two DS6000 Storage Units.