Dell R720 Display problem with Fedora 26 server
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@francesco-provino I guess i have no choice for data sake protection. Do have any other choice? What is the best option for me?
thin lvm / cow is for sharing storage right purpose on limited disk right? by saying slow down A LOT, may i know roughly how many % slower based from you experience?
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
thanks.Will continue my experiment. I guess I stuck with PERC RAID then.
What do you mean stuck? It's a good thing. Why are you trying to work around it? There is some logic missing here. You can always remove it, but why would you?
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
3. swap (LVM with swap) 2GBI don't use swap volumes any longer. Just make a swap file on /
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
Am i right to say better to just use the whole array on the host and locate it to root partition? and use file image instead for flexibility?
Of course, you never use anything but file image.
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@scottalanmiller i mean i want to experiment between perc and sw raid to learn the diff... so i guess i dont have that option to play around...
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@scottalanmiller i mean i want to experiment between perc and sw raid to learn the diff... so i guess i dont have that option to play around...
Ah, just for learning, that is fine. But RAID is RAID, it's not like you really learn much. You should learn MD in a lab, not on this hardware. You can't easily make an MD RAID array on top of the PERC using the image files to learn anything you want with MD.
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@scottalanmiller i mean i want to experiment between perc and sw raid to learn the diff... so i guess i dont have that option to play around...
If you want to learn how to manage md, just make a virtual machine with a lot of small virtual drives. Much easier and safer if you're just wanting to learn (if you completely wipe something, it's only a vm.)
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@travisdh1 said in Dell R720 Display problem with Fedora 26 server:
@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@scottalanmiller i mean i want to experiment between perc and sw raid to learn the diff... so i guess i dont have that option to play around...
If you want to learn how to manage md, just make a virtual machine with a lot of small virtual drives. Much easier and safer if you're just wanting to learn (if you completely wipe something, it's only a vm.)
Exactly
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@francesco-provino said in Dell R720 Display problem with Fedora 26 server:
One last thing: raid 1 on standard SATA hdd is gonna be slow. Quite slow.
AFAIK, RAID 1 will improve read 2x ? maybe slower write but not so much?
CMIIW.
Thanks.
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@francesco-provino said in Dell R720 Display problem with Fedora 26 server:
One last thing: raid 1 on standard SATA hdd is gonna be slow. Quite slow.
AFAIK, RAID 1 will improve read 2x ? maybe slower write but not so much?
CMIIW.
Thanks.
Read is 2x, Write is 1x. There is no write penalty whatsoever.
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@scottalanmiller yes thats what i think of. so @Francesco-Provino statement is incorrect? : One last thing: raid 1 on standard SATA hdd is gonna be slow. Quite slow.
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@scottalanmiller yes thats what i think of. so @Francesco-Provino statement is incorrect? : One last thing: raid 1 on standard SATA hdd is gonna be slow. Quite slow.
RAID 1 is 2x the speed of a single drive for reads, and 1x for writes. Period. No ifs, ands, or buts. You can define that as fast or slow, that's subjective. But the speed compared to a single drive is what it is, no exceptions.
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@scottalanmiller yes thats what i think of. so @Francesco-Provino statement is incorrect? : One last thing: raid 1 on standard SATA hdd is gonna be slow. Quite slow.
@kuyaz a 7200rpm (I hope) drive is slow by today standard, even more for a virtualization lab. Today's standard is SSD.
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@francesco-provino said in Dell R720 Display problem with Fedora 26 server:
@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@scottalanmiller yes thats what i think of. so @Francesco-Provino statement is incorrect? : One last thing: raid 1 on standard SATA hdd is gonna be slow. Quite slow.
@kuyaz a 7200rpm (I hope) drive is slow by today standard, even more for a virtualization lab. Today's standard is SSD.
And that's just for a laptop!
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iDRAC FTW!
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
@scottalanmiller yes thats what i think of. so @Francesco-Provino statement is incorrect? : One last thing: raid 1 on standard SATA hdd is gonna be slow. Quite slow.
It really comes down to what speed you are expecting.
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@kuyaz said in Dell R720 Display problem with Fedora 26 server:
tried this but fail : https://serverfault.com/questions/531269/linux-drivers-for-dell-poweredge-server
it seems dell is not really friendly to fedora
@scottalanmiller help
I looked at the results there. ServerFault doesn't seem to know servers very well, their top response was less than stellar. That wouldn't have flown around here.
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@tim_g said in Dell R720 Display problem with Fedora 26 server:
What do you need the display driver for?
What exactly are you installing that isn't Fedora 26 "Minimal" or "Fedora Server Edition"?
I know if you do install a GUI on a server, Cinnamon is a bad choice. Gnome or XFCE would work better.
This ^^^
Servers don't need display drivers. There is a good reason why Dell doesn't put any energy into this.
