Attention:
Possible loss of data access – You must install alternate path software or an alternate
path (failover) driver on the host to support failover in the event of a SAS HBA failure or a host
channel failure.
The following figure shows an example of a direct-attach topology with one host and a four duplex
controller shelves. Each controller shelf might have attached drive shelves (drive trays), but these are
not shown in the figure.
The following table lists the redundant and non-redundant components in a direct-attached
configuration with one host and four duplex controller-drive trays.
Component
Redundant
Non-redundant
Host/server (see note)
Non-redundant
HIC (SAS)
Redundant
Host-to-controller cables
Redundant
Controllers
Redundant
Switch topologies
This section describes topologies that use switches to connect hosts to your storage array. The host
adapters in the hosts might be HBAs for Fibre Channel, HCAs for InfiniBand, or Ethernet for iSCSI.
The switches must support the connection type (Fibre Channel, InfiniBand or Ethernet) used between
the host and the storage array.
When a host is cabled to a duplex controller shelf (controller-drive tray), each attached host should
have two host adapters installed. For redundancy, attach each of the host adapters to a different
switch (or switch zone) so that one switch (or zone) connects to controller A and the other to
controller B in the controller shelf. In the case where a host has one HBA and one iSCSI Ethernet
adapter, the two connections might require two different types of switches.
Host cabling | 59
Summary of Contents for StorNext QD7000
Page 1: ...Hardware Cabling Guide StorNext QD7000 Firmware 8 40 xx xx 6 68683 01 Rev A...
Page 7: ...Preface Hardware Cabling Guide vii...
Page 10: ...E Series Hardware Cabling Guide December 2017 215 11792_B0 doccomments netapp com...
Page 11: ......
Page 90: ...One E5660 controller drive tray and one DE6600 drive tray Drive shelf or drive tray cabling 81...
Page 106: ...One E2760 controller drive tray and one drive tray Drive shelf or drive tray cabling 97...