Do you use the fabric interconnects or the standalone blade chassis?
Jake
On Wednesday, May 13, 2015, Götz Reinicke - IT Koordinator <goetz.reinicke@xxxxxxxxxxxxxxx> wrote:
On Wednesday, May 13, 2015, Götz Reinicke - IT Koordinator <goetz.reinicke@xxxxxxxxxxxxxxx> wrote:
Hi Christian,
currently we do get good discounts as an University and the bundles were
worth it.
The chassis do have multiple PSUs and n 10Gb Ports (40Gb is possible).
The switch connection is redundant.
Cuurrently we think of 10 SATA OSD nodes + x SSD Cache Pool Nodes and 5
MONs. For a start.
The main focus with the blaids would be spacesaving in the rack. Till
now I dont have any prize, but that woucld count to in our decision :)
Thanks and regards . Götz
Am 12.05.15 um 14:50 schrieb Christian Balzer:
>
> Hello,
>
> I'm not familiar with Cisco UCS gear (can you cite exact models?),
> but somehow the thought of buying compute gear from Cisco makes me think of
> having too much money or very steep discounts. ^o^
>
> That said, I presume the chassis those blades are in have redundancy in
> terms of PSUs (we always have at least 2 independent power circuits per
> rack) and outside connectivity.
> So from where I'm standing (I have deployed plenty of SuperMicro
> MicroCloud chassis/blades) I'd consider the blade a PoF and be done.
>
> What I would do (remembering the scale of your planned deployment) is to
> go with one dedicated MON that will be the primary (lowest IP) 99.8% of
> the time and 4 OSDs with MONs on them. If you want to feel extra good
> about this, give those OSDs a bit more CPU/RAM and most of all fast SSDs
> for the OS (/var/lib/ceph).
>
> Christian
>
> On Tue, 12 May 2015 14:30:58 +0200 Götz Reinicke - IT Koordinator wrote:
>
>> Hi,
>>
>> we have some space in our two blade chassis, so I was thinking of the
>> pros and cons of using some blades as MONs. I thought about five MONs.
>>
>> Pro: space saving in our rack
>> Con: "just" two blade centers. Two points of failures.
>>
>> From the redundndency POV I'd go with standalone servers, but space
>> could be a bit of a problem currently ....
>>
>> Waht do you think?
>>
>> Regards . Götz
>
>
--
Götz Reinicke
IT-Koordinator
Tel. +49 7141 969 82 420
E-Mail goetz.reinicke@xxxxxxxxxxxxxxx
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