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+1
Well the best option would be a raid 1 that would ensure data safety in case one drive fails actually. 
There is not I think any "optimal" strategy - but since that service (Cinder/ nova-volume) aims to provide customers a safe place to put their datas into - then your best best would be a raid 1 if you have two disks

Regards,

Razique Mahroua - Nuage & Co
razique.mahroua at gmail.com
Tel : +33 9 72 37 94 15



Le 30 avr. 2013 à 17:44, Sylvain Bauza <sylvain.bauza at digimind.com> a écrit :

> Indeed. There is room for improvement : should the 2 disks be RAID1 or parts of the same VG, as said ?
> 
> As it is recommended hardware, it would be interesting to know which kind of setup with 2 SATA disks is optimal ?
> 
> Of course, it does depend a lot of the usage : if you need to boot from volume, I would say having 2 physical PVs is better, but if you need to store critical data, then the RAID one is fine.
> 
> -Sylvain
> 
> Le 30/04/2013 14:35, Alexandre De Carvalho a écrit :
>> Here the link : http://docs.openstack.org/trunk/openstack-compute/admin/content/compute-system-requirements.html
>> 
>> regards, 
>> Alexandre
>> 
>> 2013/4/30 Razique Mahroua <razique.mahroua at gmail.com>
>> Hi,
>> can you provide us the link ?
>> I think that means create an LVM VG made of two disks (so two PV) that you will call "nova-volume"
>> Regards,
>> 
>> Razique Mahroua - Nuage & Co
>> razique.mahroua at gmail.com
>> Tel : +33 9 72 37 94 15
>> 
>> <Pièce jointe.jpeg>
>> 
>> Le 30 avr. 2013 à 09:49, Alexandre De Carvalho <alexandre7.decarvalho at gmail.com> a écrit :
>> 
>>> Hi everyone ! 
>>> 
>>> I found these ones in the documentation : "Volume storage: two disks with 2 TB (SATA) for volumes attached to the compute nodes". And I don't understand this sentence. Someone can explain to me this sentence, please ?
>>> 
>>> Thanks !
>>> 
>>> Have a good day !
>>> 
>>> -- 
>>> regards,
>>> Alexandre
>>> 
>>> 
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>> 
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