XenServer: MD RAID or not?
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@FATeknollogee said in XenServer: MD RAID or not?:
Question: Can someone provide a simple, straightforward guide to setting up MD or tells us why we should take the easy way out?
Because it is:
- Easy and simple (these are big deals in IT)
- It supports blind swapping (which isn't just really useful, it's important for being able to hand off to others, have remote hands, interns not destroying things, etc.)
- It gives you hardware offloading (not a huge deal, but it would be wrong not to mention the extra CPU and memory benefits.)
- It's the recommended way from Citrix / Linux Foundation. Using MD RAID is fully baked in, but from the commercial side, only hardware RAID is supported. This is minor, but worth mentioning. Citrix only feels hardware RAID is the way to go.
- It's more standard.
MD RAID is perfectly fine, of course. But hardware has benefits.
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@FATeknollogee said in XenServer: MD RAID or not?:
Pls don't link the other thread, it has almost 200 posts
But the other thread has the guide. The guide is the first post. The number of posts isn't really a factor. The guide should be all set for you.
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@Francesco-Provino said in XenServer: MD RAID or not?:
@FATeknollogee if you can understand italian, mine it's already out: http://www.francescoprovino.com/2016/08/22/xenserver-7-software-raid-con-mail-alert/ .
Maybe I will translate into english, if someone in ML is interested…
I'm interested in an english version...
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So, here is my article on XenServer MDADM raid: http://www.francescoprovino.com/2016/09/06/xenserver-7-software-raid-with-mail-alert/ feel free to correct my English!
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From the other thread, was it determined that you could not upgrade your XS if you do this?
Is that correct?
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WWMLD?
Melt while you look at it pondering what a beverage would do like a crazy person
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@BRRABill said in XenServer: MD RAID or not?:
From the other thread, was it determined that you could not upgrade your XS if you do this?
Is that correct?
MD RAID instructions for XS 7 were released last week.
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@FATeknollogee
would you add a link to the other post to the OP? -
@Dashrender What link??
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@FATeknollogee said in XenServer: MD RAID or not?:
@Dashrender What link??
To the 200+ post you don't want to read.
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@FATeknollogee said in XenServer: MD RAID or not?:
@Dashrender I think it's this https://mangolassi.it/topic/6675/building-out-xenserver-6-5-with-usb-boot-and-software-raid-10
Maybe a new thread is needed
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Yes, to a new & "slimmed down" version of that thread
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@scottalanmiller said in XenServer: MD RAID or not?:
@FATeknollogee said in XenServer: MD RAID or not?:
@Dashrender I think it's this https://mangolassi.it/topic/6675/building-out-xenserver-6-5-with-usb-boot-and-software-raid-10
Maybe a new thread is needed
In looking over that thread - it says installing XS to a USB stick, then using the drives in a RAID from inside XS, but I thought @scottalanmiller has moved to saying that it's probably best for most people to not install XS to USB because the task of moving logs, etc off the USB have proven to be very challenging. Not to say it can't be done, but the difficulty is so high as to make USB a situation for experts only.
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@Dashrender said in XenServer: MD RAID or not?:
@scottalanmiller said in XenServer: MD RAID or not?:
@FATeknollogee said in XenServer: MD RAID or not?:
@Dashrender I think it's this https://mangolassi.it/topic/6675/building-out-xenserver-6-5-with-usb-boot-and-software-raid-10
Maybe a new thread is needed
In looking over that thread - it says installing XS to a USB stick, then using the drives in a RAID from inside XS, but I thought @scottalanmiller has moved to saying that it's probably best for most people to not install XS to USB because the task of moving logs, etc off the USB have proven to be very challenging. Not to say it can't be done, but the difficulty is so high as to make USB a situation for experts only.
Yes, a modern XS 7 on MD RAID directly guide might be good.
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@scottalanmiller said in XenServer: MD RAID or not?:
@Dashrender said in XenServer: MD RAID or not?:
@scottalanmiller said in XenServer: MD RAID or not?:
@FATeknollogee said in XenServer: MD RAID or not?:
@Dashrender I think it's this https://mangolassi.it/topic/6675/building-out-xenserver-6-5-with-usb-boot-and-software-raid-10
Maybe a new thread is needed
In looking over that thread - it says installing XS to a USB stick, then using the drives in a RAID from inside XS, but I thought @scottalanmiller has moved to saying that it's probably best for most people to not install XS to USB because the task of moving logs, etc off the USB have proven to be very challenging. Not to say it can't be done, but the difficulty is so high as to make USB a situation for experts only.
Yes, a modern XS 7 on MD RAID directly guide might be good.
I am planning on setting up my lab machine as a backup target to start playing with file storage and backup.
So that would be good.
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Maybe use @Francesco-Provino blog post as a starting point
http://www.francescoprovino.com/2016/09/06/xenserver-7-software-raid-with-mail-alert/ -
@FATeknollogee said in XenServer: MD RAID or not?:
Maybe use @francesco provino blog post as a starting point
http://www.francescoprovino.com/2016/09/06/xenserver-7-software-raid-with-mail-alert/I think that needs a little fleshed out for the newbies.
But yes, that might be a good starting point.
