. Data Domain: DD3300 Mapping disk alerts to the correct physical disk slot
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Data Domain: DD3300 Mapping disk alerts to the correct physical disk slot

by novaray 2021. 5. 14.

요약: Data Domain DD3300 disk alerts, reference the enclosure number and the slot number to identify which physical disk has a fault. This "enclosure -dot- disk" designation in the alert자세히 보기

대상 수준: 고객

문서 콘텐츠


지침

Data Domain DD3300 utilizes a customized version of Dell's R740xd server platform.  On this Dell platform, physical disk slot numbering begins with slot zero. 
The Data Domain DD3300 software identifies physical disks, with slots designations beginning with slot=1.   It is imperative to identify the correct disk before doing any removal or replacement.  Use the below charts to establish which disk to remove based on the disk identification information provided in the alert.


 

FRONT DISKS (facing front of appliance)

Software ID= disk 1.1

Phy slot = 0 (zero)
Software ID= disk 1.4

Phy slot = 3
Software ID= disk 1.7

Phy slot = 6
Software ID= disk 1.10

Phy slot = 9
Software ID= disk 1.2

Phy slot = 1 
Software ID= disk 1.5

Phy slot = 4
Software ID= disk 1.8

Phy slot =7
Software ID= disk 1.11

Phy slot = 10
Software ID= disk 1.3

Phy slot = 2
Software ID= disk 1.6

Phy slot =5
Software ID= disk 1.9

Phy slot = 8
Software ID= disk 1.12

Phy slot = 11

 

MIDPLANE DISKS (facing from front of appliance)

Software ID= disk 1.15

Phy slot = 14
Software ID= disk 1.16

Phy slot = 15
Software ID= disk 1.17

Phy slot = 16
Software ID= disk 1.18

Phy slot = 17

 

REAR SSD (facing rear of appliance)

Software ID= disk 1.13

Phy slot = 12
Software ID= disk 1.14
UNUSED for DD3300
Phy slot = 13


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   EXAMPLE :

  •  The Data Domain operating system posted the following disk failure alert.

Alert Id                       p-01
Post Time                      Wed Dec  6 15:44:07 2017
Severity                       CRITICAL
Class                          HardwareFailure
Object                         Enclosure=1:Disk=18                             
Status                         active
Message                        Unable to access a disk and the disk state is missing.
Post Additional Information    EnclosureSerialNumber=NA:DiskSerialNumber=NA:FailureCode=NA
Clear Additional Information
Event Id                       EVT-STORAGE-00002                      
Event Name                     DiskFailure           
Description                    Unable to communicate with a disk. This disk cannot be used at this time.
Action                         Contact your contracted support provider or visit us online at https://support.emc.com.   
 
                                                    

  • Determine the enclosure and slot information in the alert.   -->   Enclosure=1:Disk=18 
  • Refernece the provided charts to determine which physical slot, correlates to the enclosure and disk slot information from the alert.

                                        

Software ID= disk 1.18 
Phy slot = 17
  • After referencing the diagrams we can see that enclosure 1 disk 18,  is located in physical slot # 17.  If you are doing a disk replacement , verify that this disk slot also has an amber LED, indicating the disk is faulted.
  • If you are creating a dispatch , this disk mapping information needs to be provided to the Service Technician or Customer who will be doing the disk replacement.


Note:  given that disks are located at the front, rear, and internally on the midplane, and given that there is a disparity between physical disk numbering and DDOS numbering , it is not a good idea to rely solely on the disk LED to determine which disk is faulted.  If there is any question regarding which disk should be removed , or installed, please contact your support provider for assistance.



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Mapping disk alerts to the correct physical disk slot can also be done using the CLI (command line interface).
Run the following commands to display the disk to slot mapping information.  #disk show hardware detailed has been enhanced , with a secondary output, to provide additional detail regarding enclosure-dot-disk (disk x.x)  & physical slot correlation.


   # alerts show current-detailed

Alert Id                       285212751
Post Time                      Wed Dec  6 15:44:07 2017
Severity                       CRITICAL
Class                          HardwareFailure
Object                         
Enclosure=1:Disk=18
Status                         active
Message                        Unable to access a disk and the disk state is missing.
Post Additional Information    EnclosureSerialNumber=NA:DiskSerialNumber=NA:FailureCode=NA
Clear Additional Information
Event Id                       EVT-STORAGE-00002                      
Event Name                     DiskFailure           
Description                    Unable to communicate with a disk. This disk cannot be used at this time.
Action                         Contact your contracted support provider or visit us online at https://support.emc.com. 




Note: VMware  Virtual_disk devices are outside the scope of this article, and are irrelevant for physical disk replacement considerations.

    # disk show hardware detailed

Disk    Slot        Manufacturer/Model         Firmware   Serial No.              Capacity      Type
        (pci/idx)
-----   ---------   ------------------------   --------   ----------------------  -----------   -------
dev1    160:0       VMware  Virtual_disk       N/A        6000c29eb20e28a51b7d18  250.00 GiB    SAS
dev2    160:1       VMware  Virtual_disk       N/A        6000c2917385cac7c67b2c  10.00 GiB     SAS-SSD
dev3    160:3       VMware  Virtual_disk       N/A        6000c292c65e5b4144a2ef  1024.00 GiB   SAS
dev4    160:4       VMware  Virtual_disk       N/A        6000c297b9a9a5dafc535c  1024.00 GiB   SAS
dev5    1248:1      VMware  Virtual_disk       N/A        6000c293eb4b8c7eacd7be  4.00 TiB      SAS
dev6    1248:2      VMware  Virtual_disk       N/A        6000c29a372f8e32e0546a  4.00 TiB      SAS
dev7    1248:3      VMware  Virtual_disk       N/A        6000c29d85bb1f252dc776  4.00 TiB      SAS
dev8    1248:4      VMware  Virtual_disk       N/A        6000c29a401974df62aff2  4.00 TiB      SAS
dev9    160:8       VMware  Virtual_disk       N/A        6000c29d21b207a48caa06  1024.00 GiB   SAS
dev10   160:9       VMware  Virtual_disk       N/A        6000c29fa2e7541d8729eb  1024.00 GiB   SAS
dev11   160:10      VMware  Virtual_disk       N/A        6000c29435ee15e93ccf16  4.00 TiB      SAS
dev12   1248:5      VMware  Virtual_disk       N/A        6000c291299f6800611061  4.00 TiB      SAS
dev13   1248:6      VMware  Virtual_disk       N/A        6000c29c1114cd157b67df  4.00 TiB      SAS
dev14   1248:8      VMware  Virtual_disk       N/A        6000c2958b3f98ed04bd04  4.00 TiB      SAS
-----   ---------   ------------------------   --------   ----------------------  -----------   -------
Configuration: 14 drives present.
Hardware disk information


Disk   Slot        Manufacturer/Model   Firmware   Serial No.       Capacity     Type
          
(pci/idx)
----   ---------   ------------------   --------   --------------   ----------   --------
1.1    0           ST4000NM0295         DT31       ZC1241AL         3.63 TiB     SAS
1.2    1           ST4000NM0295         DT31       ZC1241DC         3.63 TiB     SAS
1.3    2           ST4000NM0295         DT31       ZC1241E2         3.63 TiB     SAS
1.4    3           ST4000NM0295         DT31       ZC1241D0         3.63 TiB     SAS
1.5    4           ST4000NM0295         DT31       ZC123C5V         3.63 TiB     SAS
1.6    5           ST4000NM0295         DT31       ZC123ZGP         3.63 TiB     SAS
1.7    6           ST4000NM0295         DT31       ZC12418K         3.63 TiB     SAS
1.8    7           ST4000NM0295         DT31       ZC124396         3.63 TiB     SAS
1.9    8           ST4000NM0295         DT31       ZC1241AS         3.63 TiB     SAS
1.10   9           ST4000NM0295         DT31       ZC1241B8         3.63 TiB     SAS
1.11   10          ST4000NM0295         DT31       ZC12S062         3.63 TiB     SAS
1.12   11          ST4000NM0295         DT31       ZC12PZ4J         3.63 TiB     SAS
1.13   12          MZ7KM480HMHQ0D3      GD53       S3BUNX0J600187   447.13 GiB   SATA-SSD
1.14   13          (absent)             (absent)   (absent)         (absent)     (absent)
1.15   14          ST4000NM0295         DT31       ZC12S0DD         3.63 TiB     SAS
1.16   15          ST4000NM0295         DT31       ZC12S05H         3.63 TiB     SAS
1.17   16          ST4000NM0295         DT31       ZC12S0M3         3.63 TiB     SAS
1.18   17          ST4000NM0295         DT31       ZC12S0F7         3.63 TiB     SAS            <<     Note that disk 1.18 maps to physical slot # 17
----   ---------   ------------------   --------   --------------   ----------   --------
Configuration: 18 drives present.


 

It is also important to note that the DD3300 #disk show state CLI command, does not display physical disk state information.  The output from this command cannot be used to determine if there is a disk reconstruction, disk fault, or absent disk.   The information in this output only applies to virtual disk devs , and not physical disk (HDD).  At this time, Disk reconstruction status can only be established by connecting to the iDRAC port on the DD3300 appliance. 

 


# disk show state

Dev     1  2  3  4  5  6  7  8  9  10
-----   ------------------------------
1-10    Y  Y  .  .  .  .  .  .  .  .
11-14   .  .  .  .
-----   ------------------------------

Legend   State           Count
------   -------------   -----
.        In Use Device   12
Y        System Device   2
------   -------------   -----
Total 0 disks and 14 devs

 

Beginning in Data Domain Operating System version 6.2.x , the #disk beacon CLI command is now functional and will aid in locating the disk by flashing its LED.
Press Ctrl+C to stop the disk beacon command.   
 

         Welcome to Data Domain OS 6.2.0.1-606547
----------------------------------------
sysadmin@dd3300-rtp1# disk beacon 1.1
Start disk LED beaconing for 1.1 ...
^C
LED beaconing completed.

 

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Data Domain

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Data Domain, DD3300 Appliance

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20 11월 2020

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