Lacie 12big Rack Fibre 8 User Manual - Page 14

LaCie 12big Rack Fibre 8 RAID, Controller Module

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LaCie 12big Rack Fibre 8 User Manual System Overview page 14 1.4.2. LaCie 12big Rack Fibre 8 RAID Controller Module One or two RAID Controller modules are supplied as part of the 12big Rack Fibre 8 enclosure core product (Fig. 08). The hot swappable plug-in 12big Rack Fibre 8 RAID Controller modules have been designed for integration into this SBB-compliant (Storage Bridge Bay) form factor enclosure. The controller provides dual external fibre channel (FC) cable interfacing for connectivity to the host computer system, a SAS interface for connection to an Expansion enclosure, an out-of-band Ethernet interface for Embedded StorView and an out-of-band VT-100 interface for access to the controller firmware program. IMPORTANT INFO: Do not mix RAID Controller Modules and Disk I/O Modules in the same enclosure. The controller's internal processor monitors conditions on each disk drive port. It provides an enclosure management interface to devices on the backplane, Power Cooling Modules, partner RAID Controller module, and OPS panel. When the enclosure is supplied with dual controllers, these processors operate in an active-active configuration to allow for fail over and fail back. The 12big Rack Fibre 8 RAID Controller provides support for Native Command Queuing (NCQ). NCQ increases the performance of SATA disk drives by allowing the individual disk to internally optimize the order in which it executes read and write commands. This will reduce the amount of unnecessary movement of the drive's heads resulting in increased performance. The controllers also support a set of performance tuning features like write-back cache management, overload performance management, synchronized cache flush, target command thread balancing and sequential write optimization. Description and use of these performance features are found in the StorView Storage Management Software User Guide and in the VT100 RAID Configuration Utility User Guide. The controller supports either 1 GB or 2 GB cache memory SD-RAM modules. SATA disk drives are supported and require an Active/Active MUX transition card, see 1.4.5.3. MUX Transition Cards . continued on the next page>> Fig. 08 - 12big Rack Fibre 8 RAID Controller Module TECHNICAL NOTE: The white diamond icon with an arrow pointing away from the connector indicates a SAS out port.

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LaCie 12big Rack Fibre 8
System Overview
User Manual
page 14
1.4.2.
LaCie 12big Rack Fibre 8 RAID
Controller Module
One or two RAID Controller modules are supplied as part of the
12big Rack Fibre 8 enclosure core product (
Fig. 08
).
The hot swappable plug-in 12big Rack Fibre 8 RAID Controller
modules have been designed for integration into this SBB-compliant
(Storage Bridge Bay) form factor enclosure. The controller provides
dual external fibre channel (FC) cable interfacing for connectivity
to the host computer system, a SAS interface for connection to an
Expansion enclosure, an out-of-band Ethernet interface for Embed-
ded StorView and an out-of-band VT-100 interface for access to the
controller firmware program.
IMPORTANT INFO:
Do not mix RAID Controller Modules and
Disk I/O Modules in the same enclosure.
The controller’s internal processor monitors conditions on each disk
drive port. It provides an enclosure management interface to devices
on the backplane, Power Cooling Modules, partner RAID Controller
module, and OPS panel. When the enclosure is supplied with dual
controllers, these processors operate in an active-active configura-
tion to allow for fail over and fail back.
The 12big Rack Fibre 8 RAID Controller provides support for Native
Command Queuing (NCQ). NCQ increases the performance of
SATA disk drives by allowing the individual disk to internally optimize
the order in which it executes read and write commands. This will re-
duce the amount of unnecessary movement of the drive’s heads re-
sulting in increased performance. The controllers also support a set
of performance tuning features like write-back cache management,
overload performance management, synchronized cache flush, tar-
get command thread balancing and sequential write optimization.
Description and use of these performance features are found in the
StorView Storage Management Software User Guide and in the VT-
100 RAID Configuration Utility User Guide.
The controller supports either 1 GB or 2 GB cache memory SD-RAM
modules.
SATA disk drives are supported and require an Active/Active MUX
transition card, see
1.4.5.3. MUX Transition Cards
.
continued on the next page>>
Fig. 08 - 12big Rack Fibre 8 RAID Controller Module
TECHNICAL NOTE:
The white diamond icon with an arrow point-
ing away from the connector indicates a SAS out port.