Disk Storage Interconnect - Data Warehouse Appliances

2850 Platform Product and Site Preparation Guide
Product
Data Warehouse Appliances
Published
February 2018
ft:locale
en-US
ft:lastEdition
2018-04-17
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ipe1471887155021.ditamap
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2850.ditaval.ditaval
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ibv1471648709644
Product Category
Hardware

Nodes and disk arrays are interconnected into a clique configuration for fault tolerance. If a node in a clique fails, its tasks are automatically moved over to the other nodes in the clique. The other nodes in the clique have direct access to all disk arrays in the clique. The system continues running minus the failed node.

Each Teradata database processing (TPA) node has redundant connections to the disk array in its clique. All links are point to point.

Node to Disk Array Interconnect: 2850 4-Node Clique (One Quad 6 Gbx4 SAS HBA)
Array_0365 0-3 Array 1 Array 2 Node 1 3 Node 2 3 Node 3 3 Node 4 3 A B 0 1 2 3 E E 0 1 2 3 A B 0 1 2 3 E E 0 1 2 3 Tray 1 R1:44+GHS I I O O I I O O Tray 1 R1:44+GHS Tray 0 R1:44+GHS Tray 0 R1:44+GHS 2850 4-Node Clique Clique inlower halfof rack Clique inupper halfof rack

Node to Disk Array Interconnect: 2850 2-Node Clique (One Quad 6 Gbx4 SAS HBA)
Array_0364 0-3 A B 0 1 2 3 E E 0 1 2 3 Tray 0 R1:44+GHS Node 1 3 Node 2 3 2850 2-Node Clique 2850 2-Node Clique Array 1 I I O O 2-node cliquesstarting at chassis locations 2, 10, or 22 2-node cliquesstarting at chassis locations 18 or 26 0-3 A B 0 1 2 3 E E 0 1 2 3 Node 1 3 Node 2 3 Array 1 I I O O Tray 0 R1:44+GHS Tray 1 R1:44+GHS Tray 1 R1:44+GHS