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From Timothy Lothering <>
Subject RE: ACS + XenServer + DAS ?
Date Wed, 09 Dec 2015 06:31:31 GMT
Hey Nux,

I have worked with a DAS before (albeit DELL), it depends on how it is segregated, in my case,
I used it for Exchange and it was seen as shared storage.

If you are looking for performance, you have 12Gbps in total, but you might want more. What
configuration were you looking at? Throughput, I/O, Host count etc?

Kind Regards,

Timothy Lothering

-----Original Message-----
From: Kristoffer Sheather @ CloudCentral []

Sent: Wednesday, 09 December 2015 12:37 AM
To:; Vadim Kimlaychuk <>
Subject: Re: ACS + XenServer + DAS ?

What you need is something like EMC ScaleIO or VMware VSAN that leverages DAS but replicates
over the network for resiliency and scale.

Kristoffer Sheather
 Mobile: +61 475 048 864 | Switch: +61 2 6160 7624 | Email:
LinkedIn:   | Skype: kristoffer.sheather | Twitter:


 From: "Nux!" <>
Sent: Wednesday, December 9, 2015 6:26 AM
To: "Vadim Kimlaychuk" <>
Subject: Re: ACS + XenServer + DAS ?   

Let's say this

plus a LSI Megaraid card.

It has 8 x Mini-SAS ports that I can connect hypervisors to, but from what 
I read and from what Simon says ( :> ) that doesn't give me shared storage 
unless I re-export it from another computer.
Doing this beats the purpose in a way, because I wanted speed.. If I go 
over the network I lose that.

So it starts to be clear to me DAS is not what I need. :)


Sent from the Delta quadrant using Borg technology!


----- Original Message -----
> From: "Vadim Kimlaychuk" <>
> To:
> Cc: "Nux!" <>
> Sent: Tuesday, 8 December, 2015 19:15:46
> Subject: Re: ACS + XenServer + DAS ?
Timothy Lothering
Solutions Architect
Managed Services

T: +27877415535
F: +27877415100
C: +27824904099


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> Nux,
> It is hard to understand without part number what exactly do you mean?
> DAS at Supermicro is usually referenced as backplane where you plug
> HDD-s in. We have such a server with 24 HDD and HBA adapter behind it.
> But this is just a server with a lot of bays for hard drives.
> Vadim.
> On 2015-12-08 20:49, Nux! wrote:
>> Hello,
>> I'm asked to set up something like the $subject. The DAS is Supermicro
>> (mini-SAS).
>> As I've never worked with this kind of stuff before, can anyone clarify
>> if this qualifies as shared storage in any way and can be used for HA
>> or live migration?
>> From what I read DAS is considered by XenServer as local storage and
>> there's no way around, I'm hoping to be told differently. :)
>> Thanks,
>> Lucian
>> --
>> Sent from the Delta quadrant using Borg technology!
>> Nux!
>> [1]
> Links:
> ------
> [1]

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