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Overview

The Dell Shared PowerEdge RAID Controller (PERC) 8 card installed on the PowerEdge VRTX system supports Single

Root Input Output Virtualization (SR-IOV). This feature allows multiple systems to share available hardware resources.

In the PowerEdge VRTX system, the Shared PERC 8 card allows four server modules to access a local shared storage.

Each server module's operating system loads a Virtual Function (VF) driver that allows the server module to

communicate with the Shared PERC 8 firmware. The server module can then be mapped to either a single Virtual Disk

(VD) or multiple VDs that are located on the shared storage. Therefore, from a single server module, you can only access

the VDs that are mapped to that server module.

The characteristics of a Shared PERC 8 card are as follows:

•

Compatible with serial-attached SCSI (SAS) 2.0 providing up to 6 Gb/sec throughput.

•

Supports Dell-qualified SAS-hard drives and SAS solid-state drives (SSDs).

NOTE: Mixing disks of different speeds (7,200 rpm, 10,000 rpm, or 15,000 rpm) and bandwidth (3 Gbps or 6

Gbps) while maintaining the same drive type (SAS) and technology (HDD or SSD) is supported. Mixing hard

drives and SSDs within a virtual disk is not supported.

NOTE: SATA drives are not supported.

•

Offers RAID control capabilities, which include support for RAID levels 0, 1, 5, 6, 10, 50, and 60.

NOTE: Non-RAID drives are not supported.

•

Provides reliability, I/O virtualization, and fault-tolerant disk subsystem management.

•

Controller configuration is only accessible through the Dell Chassis Management Controller (CMC).

NOTE: The Shared PERC 8 card does have the Option ROM (OP-ROM).

NOTE: Booting from a shared storage is not supported. You can only boot from the storage located on the

server module.

•

Contains a unique firmware image that supports SR-IOV using an operating system device driver that is loaded

on a server module.

•

Supports up to four available VF drivers to map server modules to VDs.

Table 1. Shared PERC 8 Card Capabilities

Specification

RAID levels

Enclosure per port

Processor

Battery backup unit

Non-volatile cache

Cache memory

Shared PERC 8 Card Capabilities

0, 1, 5, 6, 10, 50, and 60

Not applicable

Dell Adapter SAS RAID-on-Chip, 8-Port with LSI 2208 Chipset

Yes

1 GB DDR3, 1333 MHz