Dell PowerEdge MX840c EMC DCPMM Users Guide
Dell PowerEdge MX840c Manual
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- Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 1
Dell EMC DCPMM User's Guide February 2020 Rev. A04 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 2
and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2017 - 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 3
Contents Chapter 1: Introduction...5 System requirements...5 Terminology...6 Chapter 2: Change list...7 Chapter 3: Hardware...8 Server hardware configuration...8 DIMM installation and removal...8 DCPMM hardware configuration...8 DCPMM Recommended Topologies...8 CPU type and maximum memory limits... - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 4
disk creation with interleave sets...35 PMEM in memory Mode ...36 Windows troubleshooting and event monitoring...36 Chapter 10: Linux...38 Identify and configure PMEM health status...42 ESXi troubleshooting and maintenance...42 Chapter 12: System diagnostics...44 Chapter 13: Firmware update... - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 5
driver. DCPMMs do not require an extra power supply or battery and are inherently persistent. This document is intended to help customers understand the basics of Intel's DCPMM technology integrated in Dell PowerEdge Minimum version required R640, R740, R740xd, R840, R940, R940xa, MX740c and MX840c - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 6
version required Build # 5375 OS Microsoft Windows 2019 VMware ESXi 6.7 with EP10 (Build #13981272) Red Hat Enterprise Linux 7.6 SUSE Linux Enterprise Server 15 Terminology Table 2. Terminology Terminology App-direct mode (AD) CLI DCPMM GiB GB iMC Interleave Set x1 (by one) Interleave PM, PMEM - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 7
3. Change list Version A01 A02 A03 Changes Original Version Topics with new updates: • System Requirement • Server hardware configuration • DCPMM recommended topologies • Management utility Topics with new updates: • System Requirement • Server hardware configuration 2 Change list Change list 7 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 8
supported and validated DCPMM configurations in two-socket servers. Four-socket configurations are a direct scale up of two-socket configurations. NOTE: For PowerEdge R840 . See the Installation and Service Manual for Memory installation guidelines of respective servers. NOTE: The following image - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 9
DRAM of CPUs Populati Populati Capacit in the on on y (GB) Server DCPMM Capacit y (GB) OS Memory in Memory Mode (GB) Total CPU (GB) Ratio DRAM to Optane Memory Require s an M or L CPU Support ed in App Direct Mode Support ed in Memory Mode 1 128GB x 16GB x 4 64 256 256 320 320 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 10
Populati Populati Capacit in the on on y (GB) Server DCPMM Capacit y (GB) OS Memory in Memory Mode (GB) Total Memory (GB) Total Memory per CPU (GB) Ratio DRAM to Optane Memory Require s an M or L CPU Support ed in App Direct Mode Support ed in Memory Mode 2 128GB x 16GB x 8 128 512 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 11
Populati Populati Capacit in the on on y (GB) Server DCPMM Capacit y (GB) OS Memory in Memory Mode (GB) Total Memory (GB) Total Memory per CPU (GB) Ratio DRAM to Optane Memory Require s an M or L CPU Support ed in App Direct Mode Support ed in Memory Mode 2 256GB x 64GB x 768 2,048 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 12
Table 5. Single socket DCPMM population CPU 0 Channel 2 Channel 1 Channel 0 DCP DRAM A3 A9 A2 MM A8 A1 A7 128GB 16GB x DCPM x2 4 M DRAM DRAM 128GB 16GB x DRAM x1 6 DRAM DRAM DCP MM 128GB 16GB x DRAM x2 6 DRAM DRAM DCP MM 128GB 16GB x DRAM x4 6 DRAM DCPM DRAM DCP M MM 128GB - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 13
Table 6. Dual socket DCPMM population (continued) CPU 0 and CPU 1 Channel 2 Channel 1 Channel 0 DCP DRAM A3, A9, A2, B2 A8, A1, B1 A7, MM B3 B9 B8 B7 only on CPU 0 128GB 32GB x DRAM x 2 12 DRAM DRAM DCP MM 128GB 32GB x DRAM x 4 12 DRAM DRAM DCP MM 128GB 32GB x DRAM x 8 12 DRAM - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 14
Table 7. Quad socket DCPMM population CPU 0, CPU 1, CPU 2 and CPU 3 Channel 2 Channel 1 Channel 0 Channel 0 Channel 1 Channel 2 DCP DRAM A3, A9, A2, B2, A8, A1, A7, MM B3, B9, C2 B8, B1, C1 B7, C3 C9 C8 C7 A10, B10, C10 A4, B4, A11, A5, C4 B11, B5, C11 C5 A12, A6, B12, B6, C12 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 15
. Each system must contain only one capacity of DCPMM. If you mix DCPMM capacities, an F1/F2 warning message is displayed. This is not a supported configuration and must not be populated. The table DCPMM configurations replace the following rules: Mixing rules • DCPMM can be mixed with RDIMM, LRDIMM - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 16
4 BIOS Topics: • BIOS configuration setting for Intel DCPMM • App-direct mode configuration • Memory mode configuration BIOS configuration setting for Intel DCPMM DIMM discovery All installed DCPMMs that the BIOS has discovered during system inventory is displayed in the BIOS Intel Persistent Memory - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 17
Figure 3. Memory info NOTE: Data is always assumed to be in units of MiB/GiB/TiB even if labeled MB/GB/TB. User capacity overhead is up to 2% of capacity (GiB). Another overhead may be required for Regions, Namespace, and Filesystems. App-direct mode configuration Create goal Goal is created in BIOS - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 18
Figure 4. Goal configuration The BIOS options determine how the goal is created and the DCPMMs are configured: Persistent [%]: • No Change - Does not apply any changes to the current goal. • 100 - Creates a goal of 100% Persistent memory across the selected DCPMMs. • 0 - Creates a goal of 0% - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 19
Figure 5. Region configuration The number of regions that are displayed depends on the number of processors in the system and not on the DCPMMs interleaved. If the DCPMMs are configured as interleaved, one Persistent Memory Region is listed per socket in the system that has DCPMMs installed. If the - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 20
Figure 6. Region info Memory mode configuration Create goal Goal is created in the BIOS. To create a goal in BIOS, go to: Memory Settings > Persistent Memory > Intel Persistent Memory > Region Configuration > Create Goal Config. The BIOS options determine how the goal is created and the DCPMMs are - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 21
in Server System Event Log(SEL) and Life-Cycle Log problem persists, contact technical support , or contact your service provider. It is power, Power on the server and retry the operation. If the issue persists, replace the NVDIMM. For more information, see the product's owner's manual on the support - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 22
Rated Endurance, see the product Installation and Service Manual available on the support site. • UEFI0349 : Unable to initialize the NVDIMMs because different types of NVDIMM SKUs or controller revisions are installed. Recommended Action : Power off the server and replace the NVDIMMs to ensure all - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 23
time in the event of power loss. Recommended Action : Do the following and retry the operation: ○ Turn off the server. ○ Ensure the PSUs are installed as recommended in the user guide. ○ Turn on the server. For more information on supported PSUs, see the Installation and Service Manual of the system - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 24
6 iDRAC Intel DCPMM management Topics: • iDRAC GUI iDRAC GUI DCPMM firmware version DCPMM FW version is displayed under System > Inventory > Firmware inventory tab. Figure 7. DCPMM firmware version DCPMM hardware status Select the Memory link on the Dashboard to get more information about memory - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 25
Figure 8. DCPMM hardware status DCPMM goal configuration using iDRAC GUI 1. Log on to iDRAC GUI interface. 2. Navigate to Configuration > BIOS settings > Memory settings > Persistent Memory Settings tab. Figure 9. DCPMM goal configuration using iDRAC GUI 3. Navigate to Intel Persistent Memory > - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 26
It is not for reading the status of the current goal. Use instructions under DCPMM Hardware Status to confirm current configuration. 5. Click Apply and operating modes (either App-direct or Memory) in the next power cycle. DCPMM remaining rated write endurance DCPMM remaining lifetime is reflected - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 27
on the DCPMM region. If the DCPMMs are moved from one server to another server, the user must re-enter the security passphrase in BIOS setup by the Dell BIOS and operating system level security changes including Passphrase management and DCPMM erasing functions will not be supported. All these - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 28
Figure 12. Clearing Passphrase Cryptographic erase and DCPMM sanitize There are two ways to erase the persistent region content (App-direct) of the DCPMM: • Crypto Erase • Sanitize 28 DCPMM security - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 29
Both erase methods can be executed using BIOS setup options. User can choose to perform an erase on all or a subset of installed DCPMMs. Crypto erase The Crypto Erase function erases the App-direct Region Key (PM-RK) forcing the system to reboot. Cryptographic erase option can be accessed by going - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 30
up to 15 minutes with fully loaded 128 GB DIMM configuration, 30 minutes with 256 GB and 1 hour with 512 GB. NOTE: Sanitize is not supported when DCPMMs are configured in Memory mode. When the Sanitize operation is running, a prompt appears in BIOS indicating an Overwrite. Overwrite is the name for - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 31
Adding or removing DCPMMs to an existing DCPMM configuration is not supported, and not validated. It is recommended that customers back up all another storage device before making any DCPMM configuration changes. Once the server is reconfigured to the new DCPMM configuration, the customer can create - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 32
9 Windows Dell EMC supports Intel DCPMM with Microsoft Windows 2019 in Memory mode and App-direct mode. NOTE: Keep Windows updated with the monthly cumulative updates. Topics: • PMEM in App-direct mode • PMEM disk with interleave sets • PMEM in memory Mode • Windows troubleshooting and event - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 33
New-Pmemdisk" command by providing relevant region IDs. Once PMEM disks are configured, PMEM volumes can be used as normal disks. Windows supports the following PowerShell cmdlets to manage persistent memory: • Get-PmemDisk ○ Returns one or more logical persistent memory disks. ○ The returned object - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 34
devices and Persistent Memory disks from Device Manager and then scan for HW changes under Action in Device Manager. This resolves any issues with the driver stack. Create PMEM Disks Figure 18. Create PMEM Disks 34 Windows - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 35
PMEM disks Windows 2019 does not support redundant volume creation on PMEM disks by using Windows VDS (Virtual disk service). In order to create redundant volumes memory devices be displayed as a single logical disk to windows server. For PMEM Disk with the interleave set, "App-direct Interleave - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 36
size of the DCPMM. Figure 22. PMEM in memory Mode Windows troubleshooting and event monitoring If any of the PMEM physical devices or logical and navigate to : Applications and Services Logs > Microsoft > Windows The names of all persistent memory drivers logs start with "PersistentMemory." All - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 37
Figure 23. Windows troubleshooting and event monitoring Windows 37 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 38
10 Linux Topics: • Identify and configure persistent memory device • Management utility • Linux errata Identify and configure persistent memory device Listing DCPMM devices To list all physical devices in the system, run command ndctl list -DHi Create namespace The configuration of namespaces will - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 39
if data has been successfully cleaned to persistent domain during previous power cycle. Linux errata 1. If an uncorrectable error occurs in the modprobe.blacklist=nd_pmem" on the kernel command line to stop the consumption of the error and enable boot progress. Afterwards, wait sufficient - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 40
defaults, x-systemd.device-timeout=0,dax 0 2 3. Dell BIOS does not support boot from DCPMM. Some Linux operating system (Red Hat Enterprise Linux 7.6, Red Hat Enterprise Linux 8.0) distros are offering early support of this feature, but Dell BIOS does not support this feature. Workaround:None. 40 - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 41
direct mode • PMEM in Memory mode • PMEM health status • ESXi troubleshooting and maintenance PMEM in App-direct mode Log in to the Host ESXi automatically creates name spaces on the interleave sets exposed. Dell EMC does not support Noninterleaved App-Direct goals with ESXi. Figure 26. Namespaces - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 42
when there is a health error. Figure 28. PMEM health warning ESXi reports the health of the specific DCPMMs as "All data loss", when there is a fatal error. Figure 29. PMEM multibit error ESXi troubleshooting and maintenance NOTE: Go through /var/log/vmkernel.log to see if there are any errors or - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 43
interleaved App-Direct. Dell EMC does not support Noninterleaved App-Direct goals with ESXi. • If DCPMMs contain a critical error, the ESXi Host Client (HTML client) GUI does not respond when the user moves to Persistent Memory section under Storage. The host server - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 44
12 System diagnostics System diagnostics in the Lifecycle Controller does not test Intel DCPMM in App-direct mode to avoid destroying customer data. NOTE: System diagnostics are not recommended to investigate Intel DCPMM failures when in Memory mode due to extremely long test time. 44 System - Dell PowerEdge MX840c | EMC DCPMM Users Guide - Page 45
• Dell DUP update Dell DUP update Download DCPMM DUP from www.dell.com/support/drivers. NOTE install the .exe file downloaded from the Dell support site. Figure 30. System update via iDRAC Firmware Update" from Lifecycle Controller. c. Select FTP server or local drive that hosts the downloaded DUP
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Dell EMC DCPMM
User's Guide
February 2020
Rev. A04