Avago-technologies Cache Protection for RAID Controller Cards Manuel d'utilisateur télécharger pdf (Page 11)

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12Gb/s MegaRAID SAS RAID Controllers User Guide

April 2014

Chapter 1: Overview

Summary of 12Gb/s MegaRAID SATA+SAS RAID Controller Characteristics

These RAID controllers support 64-bit logical block addressing (LBA), which makes it possible to connect a large

number of drives to the RAID controller, directly and through expanders. However, the actual number of drives that

you can attach depends on the limits listed in this table rather than by actual RAID volume capacity.

1.6.3 SATA III Features

The following list describes the SATA III features of the RAID controllers:

 They support SATA III data transfers of 6Gb/s.

 They support STP data transfers of 6Gb/s and 3Gb/s.

 They provide a serial, point-to-point storage interface.

 They simplify cabling between devices.

 They eliminate the master-slave construction used in parallel ATA.

 They permit addressing of multiple SATA targets through an expander.

 They permit multiple initiators to address a single target (in a fail-over configuration) through an expander.

 They comply with the Serial ATA specification, version 3.0.

1.6.4 PCI Express Performance

The following list describes the PCIe performance features of the RAID controllers:

 They provide a PCIe interface that does the following:

— Supports a dedicated PCIe bus.

— Supports x8 lane configuration.

— Supports transfer rates of up to 8Gb/s per lane.

— Complies with the PCI Express specification, Revision 3.0.

 They provide unequaled performance through the Fusion-MPT architecture.

 They provide high throughput and low CPU utilization to off load the host processor.

Maximum drives per controller 64 (32 configurable

drives)

240 240 240

Maximum hot spares per controller 32 240 240 240

Maximum spans per virtual drive8888

Maximum enclosures 2 16 per port 16 per port 16 per port

Table 1 12Gb/s MegaRAID SATA+SAS RAID Controllers Array Limitations

Specification

MegaRAID SAS

9341-4i Controller

MegaRAID SAS

9341-8i Controller

MegaRAID SAS

9361-4i Controller

MegaRAID SAS

9361-8i Controller

MegaRAID SAS

9380-4i4e

Controller

MegaRAID SAS

9380-8e Controller

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 42 43

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