Internal Dual Sd Module; Flash Bios Memory; Storage Controllers; Perc H200 - Dell PowerEdge R715 Technical Manual

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
An internal USB standard connector (located on the control panel board)

An optional cabled internal dual SD module (The port on the control panel is for an optional
USB key and is located inside the chassis.)
Some of the possible applications of the internal USB key are:

User custom boot and pre-boot OS for ease of deployment or diskless environments

USB license keys for software applications like eToken™ or

Storage of custom logs or scratch pad for portable user defined information (not hot-
pluggable)

11.2.3 Internal Dual SD Module

The internal dual SD module is a fully redundant module which uses two SD cards in a fully mirrored
mode. If one card fails, the module issues an alert (no longer redundant) and continues to function
with the surviving SD card. This allows you to gracefully bring down the hardware node to restore
redundancy without any interruption to the supported VMs.
The Internal SD Module is dedicated for an SD flash card with embedded Hypervisor for virtualization.
The SD flash card contains a bootable OS image for virtualized platforms. The microcontroller has a
USB 2.0 interface to the control panel (through 1x12 cable) and SD card controller that interfaces the
SD flash cards. When two SD flash cards are used, the controller can use the two flash cards as a
redundant configuration. The controller can detect power loss and quickly housekeep before
powering off to minimize chances for data corruption. Only the primary (SD0) is detected and
bootable. SD1 is for mirror use only.

11.2.4 Flash BIOS memory

A flash EEPROM resides on the SPI Bus for BIOS and configuration storage. A 4 MB device is utilized for
this function. The flash memory permits the BIOS to be upgraded in the field. The flash BIOS may be
write-protected by software.

11.3 Storage Controllers

11.3.1 PERC H200

The H200 SAS HBA is an expansion card that plugs into the dedicated internal SAS slot on Riser1. It
incorporates two four-channel 6 Gb/s SAS IOCs for connection to SAS hard disk drives. It is designed
in a form factor that allows the same card to be used in other 11G 2U rack-form factor platforms.

11.3.2 PERC H700

Customers who want an internal RAID solution should select the H700. This card has its own processor
with a PCI Express Gen2 host interface and DDR2 memory and installs into the dedicated internal SAS
slot on Riser1. A battery is also available for backup. It supports the internal 6 Gb/s backplane
interface for internal storage options (SAS, SATA, or SSD HDD). The PowerEdge R715 supports both
256MB and 512MB cache options on the internal H700.
PowerEdge R715 Technical Guide
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