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| brolin_empey | Maxdamantus: https://www.dell.com/community/PowerEdge-HDD-SCSI-RAID/PowerEdge-2950-Boot/td-p/4449992 Search the page for “without raid”. It sounds like the drive bays at the front of the PowerEdge 2950 are connected to a RAID host controller card but that the motherboard also has SATA host ports but they are not intended to have an HDD/SSD connected to them. So, this seems to explain why I can only boot from the SATA SSD installed in the drive | 01:37 |
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| brolin_empey | bay/backplane/I do not know my terminology for actual server computer hardware in the front using RAID. I guess I should try to connect the SATA SSD directly to the motherboard even if that requires disconnecting the internal ODD. I can probably use a USB ODD if I ever need an ODD on this computer again now that the OS is already installed on the HDD/SSD in the computer. | 01:37 |
| Maxdamantus | Now that you mention an ODD, is that ODD connected directly to one of the motherboard's SATA ports? Because if so, you might want to try connecting it to a different one. | 01:55 |
| Maxdamantus | Usually the M.2 SATA slot is physically shared with one of the SATA ports. | 01:55 |
| Maxdamantus | since the CPU/chipset will have a particular number of logical SATA ports (eg, 6 or 8), and the motherboard will usually provide physical SATA ports for all of those logical ports, and if it supports M.2, it will reuse one of the physical ports there. | 01:57 |
| Maxdamantus | nvm, you didn't mention M.2 | 02:00 |
| brolin_empey | I removed the top of the case to see the internals of the computer. The SATA(PI) ODD is connected to the SATA B connector on the motherboard. The SATA A connector on the motherboard has nothing connected. This model of computer is apparently from 2007 so I think it predates M.2 and maybe even mSATA. I guess I could use a caddy/adapter designed to install a 2.5-inch HDD or SSD in the drive bay used by an ODD in a notebook computer in the drive bay used | 02:00 |
| brolin_empey | for the ODD in this computer. I think the samsung700z notebook computer of my father from 2012 that died a year or two ago has one of these caddies/adapters I can reuse. This situation actually seems to make sense now because the motherboard firmware refers to or mentions something like SATA A and SATA B ports but only shows the ODD for these ports. | 02:00 |
| Maxdamantus | but it sounds like the "RAID" option is using a separate card. Does the motherboard only have one physical SATA port? | 02:01 |
| Maxdamantus | You'd certainly want to connect the drive to the board directly if you want to avoid going through the RAID card. | 02:02 |
| Maxdamantus | (connect the drive to the motherboard) | 02:02 |
| brolin_empey | The motherboard has at least two SATA host ports using normal SATA connectors. I only see two SATA ports and the motherboard firmware only mentions two ports so I think it has only two ports. | 02:03 |
| brolin_empey | https://scontent.fyvr1-1.fna.fbcdn.net/v/t1.15752-9/p1080x2048/84556287_185078556069073_3850752688434184192_n.jpg?_nc_cat=109&_nc_oc=AQn9TRvDfXyFR9FfvUlj3ajX9JDefUEYyAmhcHXU0vlCOyZz_Px0b9XEaBOl4b28qTU&_nc_ht=scontent.fyvr1-1.fna&_nc_tp=6&oh=5f47c735e663fe62f24c4d0ab6e2cb24&oe=5EC670AE | 02:15 |
| brolin_empey | The blue SATA data cable for the ODD is connected to the SATA B port on the motherboard. The unused SATA connector on the motherboard is for the SATA A port. | 02:17 |
| Maxdamantus | Okay. From Googling, it sounds like you can enable/disable the two SATA ports, and I get the impression it might be an error for a drive to not be detected in an enabled SATA port, so maybe you need to enable the currently-unused one. | 02:19 |
| brolin_empey | The SATA(PI) ODD uses a slimline SATA connector instead of normal, separate SATA data and wide SATA power connectors so I cannot directly replace the ODD with the 2.5-inch SATA drive case for the mSATA SSD. I have to either use the caddy for a notebook computer ODD bay or try to fit an LP4 to SATA power adapter/cable in the available space. Or find a slimline SATA to normal SATA adapter, which I guess is commercially available? | 02:26 |
| brolin_empey | I solved one problem but now I have a new problem. I removed the slimline SATA to 2.5-inch normal SATA drive caddy from the samsung700z notebook computer that died, used this caddy to connect the 2.5-inch normal SATA drive case for the mSATA SSD to the SATA_A port on the PowerEdge 2950 motherboard. Now the PowerEdge boots the OS (Ubuntu) from the mSATA SSD connected as a normal SATA drive without using RAID but I still have to press at least one key while | 03:13 |
| brolin_empey | the computer is booting and apparently the fans are always running full speed, which is very loud. Any idea why the fans do not automatically change to the slow/quieter mode? The rotational pseudofile for sda now contains 0, as it should, because the SSD is connected directly to the motherboard as a normal SATA drive, not connected to the RAID controller. | 03:13 |
| brolin_empey | I think the fans may have eventually slowed because they seem quieter now. | 03:16 |
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| DocScrutinizer05 | >> If I disable the RAID controller then I cannot get the computer to boot from the SATA SSD but the computer seems to have noticed that I replaced the SATA HDD [1 Feb 2020 10:56:02] <brolin_empey> with a SATA SSD even though the new drive is a clone of the old drive<< sounds like your cloned data on drive was from a RAID drive, IOW your old computer had RAID enabled and so you need RAID on new computer too | 18:09 |
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