[ovirt-users] Storage Hardware for Hyperconverged oVirt: Gluster best practice

[ovirt at fateknollogee.com]

If a disk fails (aka node fails) assuming no RAID, once the disk gets 
replaced, the node will rebuild?
Is that what will happen or am I over simplifying?

On 2018-01-26 09:02, Yaniv Kaul wrote:
> On Fri, Jan 26, 2018 at 4:58 PM, <ovirt at fateknollogee.com> wrote:
> 
>> Yaniv,
>> 
>> You bring up a valid point.
>> 
>> I asked about RAID since I was concerned about drive failures &
>> performance.
>> Since Gluster will handle data replication, using HBA seems like a
>> better choice?
> 
> Without local node replication (RAID), a failed disk == a failed node.
> This may or may not be acceptable.
> Y.
> 
>> From Yaniv:
>  I think there are two interesting questions here:
> 1. Why would you want RAID? Your data is replicated already on other
> Gluster nodes. RAID writes will wear out the SSDs earlier and RAID
> 'wastes'
> additional space. The reason may be because you don't want the node to
> go
> down in case of a single disk malfunction. Fair - but is that the
> case?
> 2. I think HW RAID should be higher performing, but that's about it.
> Y.
> 
>  On 2018-01-10 12:05, Roberto Nunin wrote:
> 
>> Il 10 Gen 2018 20:40, <ovirt at fateknollogee.com> ha scritto:
>> 
>>> oVirt + Gluster (hyperconverged) RAID question:
>>> I have 3 nodes of SuperMicro hardware, each node has 1x SATADOM
>>> (boot drive for o/s install) and 6x 1TB SSD (to be used for
>>> Gluster).
>>> For the SSDs, is hardware or software RAID preferred or do I use
>>> an
>>> HBA?
>>> The RedHat docs seem to suggest hardware RAID, others on the forum
>>> say HBA  or software RAID.
>>> 
>>> What are other folks using?
>> 
>> I'm using hardware raid.
>> 
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>> 
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> 
> 
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