<?xml version="1.0" encoding="UTF-16"?>
<SoftwareComponent schemaVersion="1.0" packageID="R107407" releaseID="R107407" dateTime="2005-08-27T05:25:39-05:00" releaseDate="August 27, 2005" vendorVersion="521S" dellVersion="A04" packageType="LWXP" xmlGenVersion="1.0.1977">
  <Name>
    <Display lang="en"><![CDATA[LSI Logic PERC 4e/DC, v.521S, A04]]></Display>
  </Name>
  <ComponentType value="FRMW">
    <Display lang="en"><![CDATA[Firmware]]></Display>
  </ComponentType>
  <Description>
    <Display lang="en"><![CDATA[Dell PowerEdge RAID Controller 4e/DC Firmware release 

Version: 521S]]></Display>
  </Description>
  <LUCategory value="PERC">
    <Display lang="en"><![CDATA[Disk Controller]]></Display>
  </LUCategory>
  <Category value="SR">
    <Display lang="en"><![CDATA[SCSI Raid]]></Display>
  </Category>
  <SupportedDevices>
    <Device componentID="6315" embedded="0">
      <PCIInfo deviceID="0408" vendorID="1000" subDeviceID="0002" subVendorID="1028" />
      <Display lang="en"><![CDATA[PERC 4e/DC]]></Display>
    </Device>
  </SupportedDevices>
  <InstallInstruction fileName="RAID_FRMW_WIN_R107407.EXE" typeCode="LWXP">
    <Display lang="en"><![CDATA[Dell Update Package Instructions for RAID_FRMW_WIN_R107407.EXE:

Installation
1. Browse to the location where you downloaded the file and double-click RAID_FRMW_WIN_R107407.EXE.
2. Read over the release information presented in the dialog window.
3. Download and install any prerequisites identified in the dialog window before proceeding.
4. If this is a BIOS update package, install any necessary Embedded Systems Management firmware prior to this BIOS update. Otherwise, go next step.
5. Click the Install button.
6. Follow the remaining prompts to perform the update.
]]></Display>
  </InstallInstruction>
  <RevisionHistory>
    <Display lang="en"><![CDATA[Current Firmware - 521S
(Previous - 513T)

Current BIOS - H430
(Previous - H419)

Current Ctrl-M - U827
(Previous - U821)

Current Boot Block - D.2.1.9
(Previous - D.2.1.5) 

Fixes

1. Increased memory timing margins to address the following potential symptoms: 
System hangs during operating system installs or other heavy I/O, Windows Blue Screens referencing "Kernel Data Inpage Errors" or Linux Megaraid timeouts/errors.  
2. Fixed an issue that optimized cache flush algorithms while switching between no read-ahead to read-ahead cache modes.
3. Modified the Fast Initialization function to delete all operation system partition table information.
4. Modified Ctrl-M to clear physical drive media error count upon drive replacement.
Note: System must be powered on during the drive replacement in order for media errors to be cleared.
5. Modified caching algorithms to not switch from Write-back to Write-through during a battery fast charge. 

Enhancements

1. Added Patrol Read feature.  Patrol Read involves the review of the system for possible hard drive errors that could lead to drive failure, then action to correct the errors. The goal is to protect data integrity by detecting physical drive failures before the failures can damage data. Patrol Read adjusts the amount of RAID controller resources dedicated to Patrol Read operations based on outstanding disk I/O.
2. Added Rebuild Checkpoint feature.  The Dell PERC firmware has a feature to resume a rebuild on a physical drive in case of an abrupt power loss or if the server rebooted in the middle of a rebuild operation.
3. Enhanced write algorithms to increase I/O performance for RAID 5 and RAID 50 virtual disks using four or more disks that are configured to use write-through write cache mode.

Firmware upgrade while controller is doing background I/O task:
The firmware upgrade may fail if any of the RAID controllers in the system are performing an I/O background task. (ie. check consistency, background initialization, rebuild, or reconstruction).  Allow the background task to complete before attempting to upgrade the firmware. Patrol Read tasks will not affect a firmware upgrade. Current RAID configuration will not be modified or cleared during the Firmware Upgrade process.]]></Display>
  </RevisionHistory>
  <ImportantInfo URL="http://support.dell.com/support/downloads/format.aspx?releaseid=R107407&amp;c=us&amp;l=en&amp;s=gen&amp;cs">
    <Display lang="en"><![CDATA[]]></Display>
  </ImportantInfo>
  <Criticality value="0">
    <Display lang="en"><![CDATA[Not Defined-]]></Display>
  </Criticality>
</SoftwareComponent>