SC9000 Storage System Owner's Manual
SC9000 Hardware
The storage controllers provide the central processing capability for the Storage Center Operating System , application software ( Dell Storage Manager Client ), and management of RAID storage.
Each storage controller includes two Intel Xeon CPUs, a cache card, an Integrated Dell Remote Access Controller 8 (iDRAC8), a four‐port Intel network daughter card, and up to six IO cards installed in three full‐height slots and three low‐profile slots. The Storage Center Operating System is installed on an embedded SSD within each storage controller .
The IO cards in the
storage
controller
are
designated as front-end ports or back-end ports.
- Front‐end ports: Hosts, servers, or Network Attached Storage (NAS) appliances access storage by connecting to the storage controller iSCSI, Fibre Channel, or FCoE IO cards through one or more network switches. The ports for these connections are located on the back of the storage controller , but are designated as front‐end ports.
- Back‐end ports: Expansion enclosures , which hold the physical disks that provide back‐end storage, connect directly to the SAS ports on the storage controllers . The SAS ports are designated as back‐end ports, which are part of a private network between the storage controllers and expansion enclosures .
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