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first ESXi installation - questions about config


Peps
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G1610T (will be replaced soon with i3-3240 or i3-3250 or i5-3470T)

16 GB RAM

Bay 1-3: 3x3TB WD RED

Bay 4: 1x 2TB

ODD Port: 256GB SSD

 

I want to install ESXi on a SD card and use the SSD as datastore for the vms. (3-5 VMs: webserver, omv, small windows-testlab)

On one VM, I want to install omv and attach bay 1-3 with rdm to the vm, to do a sw raid 5.

The 2TB hdd should be datastore used by the other vms.

 

Is this configuration possible?
I think i have to put the B120i to AHCI mode, right?
I read, that with a configuration like this one, there will be no trim for the ssd.

 

Any recommendations how to do it better or completely different? I don't want to buy another raid controller.

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I do not think you can pass just the drives through by themselves it would have to be the whole controller.   what you could do though is make a vm with openfile/freenas/etc have 3 drives pointed to it then have that vm make the software raid then present that as another vmfs as a iscsi target since it is internal it runs at bus speed and not just 1gb

 

that said I would suggest booting off the on board usb port with a sandisk fit drive as there have been read issues on the sd card

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you can use unsupported RDM mode, with the controller in AHCI mode.

 

checkout my Experts Exchange article here on how to do it...

 

https://rdsrc.us/8z0Cyo

 

it's a bit of a fudge, hack, unsupported etc

 

your mileage may vary etc

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you can use unsupported RDM mode, with the controller in AHCI mode.

 

checkout my Experts Exchange article here on how to do it...

 

https://rdsrc.us/8z0Cyo

 

it's a bit of a fudge, hack, unsupported etc

 

your mileage may vary etc

 

Did u tried this with the B120i? Tuurbo says AHCI has extrem problems.

 

Unfortunately ESXi has extreme performance problems with de Gen8 in AHCI mode, what results in a non-working setup.

 

See more info here: http://homeservershow.com/forums/index.php?/topic/11143-howto-esxi-with-jbod/

 

Your setup is interesting. So RDM is not necessary?

Do you geht SMART and spindown working?

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I'm not sure if I understand your question. I still use RDM, but it's no longer necessary to configure/create a RAID(0) for every disk.

 

I'm still working on how to get SMART and/or spindown of the harddisks working.

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Im now using ESXi with AHCI.

No problems with port resets.

RDM works fine. Also OMV can read SMART data.

Great.

But: When I copy large files, the write speed slows ddown after a few seconds from 100mb/sek to 30mb/sek.

Read data works with 100mb/sek.

 

Anybody an idea?

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