Dot Hill Systems II 200 FC Manuale Utente
1-8
SANnet II 200 FC, SATA, and SATA SE Array Installation, Operation, and Service Manual • March 2005
in a JBOD array. For example, “SANnet II 200 D1000” identifies a JBOD array with
SES firmware version 1000 and “SANnet II 200F A1000” identifies a SANnet II 200
FC RAID array with firmware version 1000.
SES firmware version 1000 and “SANnet II 200F A1000” identifies a SANnet II 200
FC RAID array with firmware version 1000.
For a list of supported racks and cabinets, refer to the SANnet II Family Rack
Installation Guide for 2U Arrays.
Installation Guide for 2U Arrays.
Reliability, availability, and serviceability (RAS) are supported by:
■
Redundant components
■
Notification of failed components
■
Components that are replaceable while the unit is online
For information about specifications and agency approvals, see “SANnet II 200 FC,
SATA, and SATA SE Array Specifications” on page A-1.
SATA, and SATA SE Array Specifications” on page A-1.
1.2
Field-Replaceable Units
This section describes the field replaceable units (FRUs) contained in the SANnet II
200 FC, SATA, and SATA SE arrays.
200 FC, SATA, and SATA SE arrays.
1.2.1
RAID I/O Controller Modules
A dual-controller configuration offers increased reliability and availability because it
eliminates a single point of failure, the controller. In a dual-controller configuration, if
the primary controller fails, the array automatically fails over to the second controller
without an interruption of data flow.
eliminates a single point of failure, the controller. In a dual-controller configuration, if
the primary controller fails, the array automatically fails over to the second controller
without an interruption of data flow.
The FC, SATA, and SATA SE array I/O controller modules are hot-serviceable. Hot-
serviceable means that the module can be replaced while the array and hosts are
powered on, but the connected hosts must be inactive.
serviceable means that the module can be replaced while the array and hosts are
powered on, but the connected hosts must be inactive.
■
SANnet II 200 FC array RAID controller modules provide six Fibre Channel ports.
■
SANnet II 200 SATA array I/O controller modules provide eight Fibre Channel
ports.
ports.
■
SANnet II 200 SATA SE array I/O controller modules provide six Fibre Channel
ports.
ports.
Single- and dual-controller models are available, with the dual-controller version
supporting active/passive and active/active configurations. Each RAID controller is
configured with 1 Gbyte of cache.
supporting active/passive and active/active configurations. Each RAID controller is
configured with 1 Gbyte of cache.
In the unlikely event of an I/O controller module failure, the redundant RAID
controller immediately begins servicing all I/O requests. The failure does not affect
application programs.
controller immediately begins servicing all I/O requests. The failure does not affect
application programs.
Each RAID I/O controller module can support up to 1 Gbyte of Synchronous Dynamic
Random Access Memory (SDRAM) with Error Control Check (ECC) memory. In
addition, each controller supports 64 Mbyte of on-board memory. Two Application-
Random Access Memory (SDRAM) with Error Control Check (ECC) memory. In
addition, each controller supports 64 Mbyte of on-board memory. Two Application-