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Sun X4170 M2 RAM discrepancy

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Operating Systems Solaris Sun X4170 M2 RAM discrepancy
# 1  
Old 01-16-2012
Sun X4170 M2 RAM discrepancy
Hi all,

We are seeing an odd problem on one of our new servers. It seems to be reporting 4MB less RAM than is installed:

Code:
[root@server1:/]# prtconf | grep Mem
Memory size: 32764 Megabytes

Our other servers for example shows none missing:

Code:
[root@server2:/]# prtconf | grep Mem
Memory size: 32768 Megabytes

Both servers are running Oracle Solaris 10 9/10 s10x_u9wos_14a X86. Built from the same image, new 4GB DIMMs. I'm guessing an issue with one of the DIMMs but before we proceed I would like to know if anyone has seen this before?

Thanks
# 2  
Old 01-17-2012
jst chk ur memory slots and memory size by using
prtdiag -v

nd tell me what it shows and how many rem its shows on both server..
# 3  
Old 01-17-2012
It shows 8 slots free and 8 in use which is correct:
Code:
Type    Status Set Device Locator      Bank Locator
------- ------ --- ------------------- --------------------
DDR2    in use 0   DIMM_A0              A
DDR2    in use 0   DIMM_A1              A
DDR2    empty  0   DIMM_A2              A
DDR2    empty  0   DIMM_A3              A
DDR2    in use 0   DIMM_B0              B
DDR2    in use 0   DIMM_B1              B
DDR2    empty  0   DIMM_B2              B
DDR2    empty  0   DIMM_B3              B
DDR2    in use 0   DIMM_C0              C
DDR2    in use 0   DIMM_C1              C
DDR2    empty  0   DIMM_C2              C
DDR2    empty  0   DIMM_C3              C
DDR2    in use 0   DIMM_D0              D
DDR2    in use 0   DIMM_D1              D
DDR2    empty  0   DIMM_D2              D
DDR2    empty  0   DIMM_D3              D

I reseated the RAM but it did not work. I will be taking down a similar server out of production and I will swap the RAM. This will hopefully show if its a DIMM issue or not.
# 4  
Old 01-18-2012
ok do the swaping may be ram is faulty..its happen may times..
# 5  
Old 01-18-2012
Funnily enough I swapped the RAM and it did not fix the issue. It could be either a hardware issue or an OS issue. Quite bizarre.
# 6  
Old 01-18-2012
can you send me the outpots of...

prtconf | grep -i memory

vmstat

prtdiag -v

then we can handle this issue.....may be hardware issue...
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