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I need to increase the RAM in our DELL servers. I tried using lshw to see what is already installed, but I cannot see if the RAM installed is a UDIMM or RDIMM.

Handle 0x1100, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: 1
    Locator: DIMM_A1 
    Bank Locator: Not Specified
    Type: <OUT OF SPEC>
    Type Detail: Synchronous
    Speed: 1333 MHz (0.8 ns)
    Manufacturer: 00CE00B380CE
    Serial Number: 8244850B
    Asset Tag: 02103961
    Part Number: M393B5773CH0-CH9  

Handle 0x1101, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: 1
    Locator: DIMM_A2 
    Bank Locator: Not Specified
    Type: <OUT OF SPEC>
    Type Detail: Synchronous
    Speed: 1333 MHz (0.8 ns)
    Manufacturer: 00CE00B380CE
    Serial Number: 8244855D
    Asset Tag: 02103961
    Part Number: M393B5773CH0-CH9  

Handle 0x1102, DMI type 17, 28 bytes
Memory Device
    Array Handle: 0x1000
    Error Information Handle: Not Provided
    Total Width: 72 bits
    Data Width: 64 bits
    Size: 2048 MB
    Form Factor: DIMM
    Set: 2
    Locator: DIMM_A3 
    Bank Locator: Not Specified
    Type: <OUT OF SPEC>
    Type Detail: Synchronous
    Speed: 1333 MHz (0.8 ns)
    Manufacturer: 00CE00B380CE
    Serial Number: 8244853E
    Asset Tag: 02103961
    Part Number: M393B5773CH0-CH9  

How can we find out which RAM to buy?

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2 Answers 2

up vote 14 down vote accepted

You could visit the Dell Memory Selector and input your server model to see all of your options for the specific hardware.

You already have the information you need, though. The RAM listed in your lshw output is standard Samsung DDR3 registered SDRAM. It's a 2GB PC3-10600R/RDIMM module (Dell part A4849697).

If you wish to increase it, use the Dell part number A2626093 for 4GB modules and A4849724 for 8GB modules (or look for the generic equivalents).

A search on the manufacturer part number from lshw output clearly shows the RAM modules' specifications:

Manufacturer        Samsung Electronics Co Ltd
Manufacturer Part # M393B5773CH0-CH9
Memory Type         DDR3 SDRAM
Capacity            2GB
Pins                240 Pin
Bus Type            PC-10600
Error Correction    Registered ECC
Cycle Time          1.5ns
Cas                 CL9
Data Transfer Rate  1333Mhz
Memory Clock        166Mhz
Rank                Rank 1
Voltage             1.5

enter image description here

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Type the service tag number from the tag on the machine into support.dell.com. It will give you a detailed description of all parts that shipped with the server.

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Hi @MDMarra is there a way to get the Service TAG code by shell? –  Michelangelo Apr 15 '12 at 8:06
    
try dmidecode -s system-serial-number –  Thomas G Mar 4 '13 at 18:07

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