178 Implementing the IBM Storwize V7000 with IBM Spectrum Virtualize V8.2.1
To view and configure DNS server information in IBM Spectrum Virtualize, complete the 
following steps:
1. In the left pane, click the DNS icon and enter the IP address and the Name of each DNS 
server. The IBM Spectrum Virtualize supports up two DNS Servers, IPv4 or IPv6 (see 
Figure 5-75).
Figure 5-75   DNS information
2. Click Save after you complete entering the DNS server information.
Transparent Cloud Tiering
Transparent cloud tiering is a licensed function that enables volume data to be copied and 
transferred to cloud storage. The system supports creating connections to cloud service 
providers to store copies of volume data in private or public cloud storage.
With transparent cloud tiering, administrators can move older data to cloud storage to free up 
capacity on the system. Point-in-time snapshots of data can be created on the system and 
then copied and stored on the cloud storage. An external cloud service provider manages the 
cloud storage, which reduces storage costs for the system. Before data can be copied to 
cloud storage, a connection to the cloud service provider must be created from the system. 
A cloud account is an object on the system that represents a connection to a cloud service 
provider by using a particular set of credentials. These credentials differ depending on the 
type of cloud service provider that is being specified. Most cloud service providers require the 
host name of the cloud service provider and an associated password, and some cloud 
service providers also require certificates to authenticate users of the cloud storage. 
Public clouds use certificates that are signed by well-known certificate authorities. Private 
cloud service providers can use self-signed certificate or a certificate that is signed by a 
trusted certificate authority. These credentials are defined on the cloud service provider and 
passed to the system through the administrators of the cloud service provider. A cloud 
account defines whether the system can successfully communicate and authenticate with the 
cloud service provider by using the account credentials. 
If the system is authenticated, it can then access cloud storage to copy data to the cloud 
storage or restore data that is copied to cloud storage back to the system. The system 
supports one cloud account to a single cloud service provider. Migration between providers is 
not supported.