Expansion Enclosures
Expansion enclosures allow the data storage capabilities of the SCv3000 and SCv3020 storage system to be expanded beyond the 16 or
30 drives in the storage system chassis.
The SCv3000 and SCv3020 support up to 16 SCv300 expansion enclosures, up to eight SCv320 expansion enclosures, and up to three
SCv360 expansion enclosures.
Switches
Dell offers enterprise-class switches as part of the total Storage Center solution.
The SCv3000 and SCv3020 storage system supports Fibre Channel (FC) and Ethernet switches, which provide robust connectivity to
servers and allow for the use of redundant transport paths. Fibre Channel (FC) or Ethernet switches can provide connectivity to a remote
Storage Center to allow for replication of data. In addition, Ethernet switches provide connectivity to a management network to allow
configuration, administration, and management of the Storage Center.
Storage Center Communication
A Storage Center uses multiple types of communication for both data transfer and administrative functions.
Storage Center communication is classified into three types: front end, back end, and system administration.
Front-End Connectivity
Front-end connectivity provides I/O paths from servers to a storage system and replication paths from one Storage Center to another
Storage Center. The SCv3000 and SCv3020 storage system provides the following types of front-end connectivity:
•
Fibre Channel – Hosts, servers, or network-attached storage (NAS) appliances access storage by connecting to the storage system
Fibre Channel ports through one or more Fibre Channel switches. Connecting host servers directly to the storage system, without using
Fibre Channel switches, is not supported.
•
iSCSI – Hosts, servers, or network-attached storage (NAS) appliances access storage by connecting to the storage system iSCSI ports
through one or more Ethernet switches. Connecting host servers directly to the storage system, without using Ethernet switches, is
not supported.
•
SAS – Hosts or servers access storage by connecting directly to the storage system SAS ports.
When replication is licensed, the SCv3000 and SCv3020 can use the front-end Fibre Channel or iSCSI ports to replicate data to another
Storage Center.
10
About the SCv3000 and SCv3020 Storage System
