-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 12/03/2010 12:22 PM, Alastair Sherringham wrote: > Hello, > > I have a Dell SC1425 1U server. It has 512 MB (it is 5 years old) and > want to upgrade the RAM. > > I bought 4x 1GB RAM but it does not boot - POST error "no memory > modules". > > It looks like I have the wrong RAM, even though I thought I was being > careful and checked the system technical specifications here : > > http://support.euro.dell.com/support/edocs/systems/sc1425/en/ug/f3593aa0.htm#wp1053748 > > 72-bit, ECC, PC-3200, Unbuffered, DDR II SDRAM, DIMMs, rated for > 400-MHz operation Six 240-pin 256 MB, 512 MB, 1 GB, or 2 GB > > I bought : > > Kingston ValueRAM memory - 2 GB : 2 x 1 GB - DIMM 240-pin - DDR2 > http://www.dabs.com/products/kingston-valueram-2x1gb-400mhz-ddr2-ecc-r-4NR6.html?refs=52300000-4294960364-4294952679-354710000-427490000 > > DIMM 240-pin / 400 MHz ( PC2-3200 ) ECC / CL3 Unbuffered > > So - digging a bit. Looking closely at the "System Installation" : > > http://support.euro.dell.com/support/edocs/systems/sc1425/en/it/index.htm > > The "System Memory" section says : > > "You can upgrade the system memory by installing combinations of > 256-, 512-MB, 1-GB, and 2-GB registered memory modules." > > Wikipedia says "registered" is another name for "buffered". > > So - is this my problem? The tech specs say "unbuffered" but the > "System Installation" says "buffered" ("registered"). > > The RAM I bought matches the tech specs but is "unbuffered" and the > system seems no RAM on boot. > > Can anyone confirm that my RAM should be *buffered*? > > This sort of confusion (and it appears to be in the official docs as > well) has happened before and is very frustrating. Thanks for any > help. > > Cheers, > > > -- Alastair Sherringham Digital Vision UK t: +44 (0)20 7734 8282 f: > +44 (0)20 7292 6969 > > > _______________________________________________ Linux-PowerEdge > mailing list [email protected] > https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please > read the FAQ at http://lists.us.dell.com/faq
Using the Crucial memory chooser, they're saying you can use their PC2-5300 ECC Registered dimms, and you can have up to 16 GB (4x4GB). http://www.crucial.com/uk/store/listparts.aspx?model=PowerEdge%20SC1425 I suspect the 16GB limit is facilitated by a newer bios than the ones shipped when the documentation was written. (Note that you can only have dual-ranked dimms in slots 1A, 1B, 2A and 2B, leaving the last 2 empty, to get 16GB: http://support.dell.com/support/edocs/systems/sc1425/en/it/j3350c60.htm#wp1056051) Either way, I believe you need ECC Registered ram, not unbuffered. (Most Dell PowerEdge servers have used ECC Registered ram) Mark. - -- Mark Watts BSc RHCE Senior Systems Engineer, Secure Managed Hosting www.QinetiQ.com QinetiQ - Delivering customer-focused solutions GPG Key: http://www.linux-corner.info/mwatts.gpg -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ iEYEARECAAYFAkz47KEACgkQBn4EFUVUIO3p2wCfUYaHVeJ/Tkov1/6tSp6+j6cT AfcAniVAGyJgwmmnxqyYj10OApuIW7QU =I/N8 -----END PGP SIGNATURE----- _______________________________________________ Linux-PowerEdge mailing list [email protected] https://lists.us.dell.com/mailman/listinfo/linux-poweredge Please read the FAQ at http://lists.us.dell.com/faq
