Re: [PVE-User] PBS datastore

[Aaron Lauterer <a.lauterer@proxmox.com>]

On 2/7/22 13:42, Tonči Stipičević wrote:
> Yes, I'm aware of that too ...
> 
> Obviously this's  not been  good-practice and you do not have any recommended models/types ?

No, I actually never used any, only looked into them a few times, but never found anything that I really liked.

Another thing though that could work, especially with newer boards, are NVMEs in m.2 format. The last server boards that I looked into and eventually also bought, have m.2 NVME slots.

> 
> But they are very "practical" though :)
> 
> srdačan pozdrav / best regards
> 
> Tonči Stipičević, dipl. ing. elektr.
> direktor / manager
> 
> SUMA Informatika d.o.o., Badalićeva 27, OIB 93926415263
> 
> Podrška / Upravljanje IT sustavima za male i srednje tvrtke
> Small & Medium Business IT Support / Management
> 
> mob: 091 1234003
> www.suma-informatika.hr
> 
> On 07. 02. 2022. 13:36, Aaron Lauterer wrote:
>>
>>
>> On 2/7/22 12:24, Tonči Stipičević wrote:
>>> Thank you Aaron,
>>>
>>> this atribut "small" is blocking point ... like you said it is hard to find sata disk under 250G
>>>
>>> I was also thinking about 2 x sata-dom 32G/64G   for zfs boot ? Does it make any sense (performance/relayibilty-wise?
>>
>> SATA DOMs need to be considered carefully. If they can last long enough, then why not. But if they are just cheap SSDs that will wear out fast... well.
>>
>>>
>>> Ok , today I'm gonna install PBS on 4x2T (disks, not ssds) zfs raid10 and create one new dataset in /rpool  -> /rpool/databck    ...  So , the PBS itself and datastore will reside on the same pool ...  Then I'll make some copmarison tests (backup/restore)  and report back some relevant results ...  I'd like to avoid PBS on its own pool because this SuperMicro 721 case has only 4 disk slots , a additional ones (2) have to be connected directly to MB ...
>>>
>>>
>>> 'till then
>>>
>>> BR
>>>
>>> Tonci
>>>
>>> srdačan pozdrav / best regards
>>>
>>> Tonči Stipičević, dipl. ing. elektr.
>>> direktor / manager
>>>
>>> SUMA Informatika d.o.o., Badalićeva 27, OIB 93926415263
>>>
>>> Podrška / Upravljanje IT sustavima za male i srednje tvrtke
>>> Small & Medium Business IT Support / Management
>>>
>>> mob: 091 1234003
>>> www.suma-informatika.hr
>>>
>>> On 07. 02. 2022. 09:44, Aaron Lauterer wrote:
>>>> A PBS datastore is just a directory somewhere.
>>>>
>>>> If you set up the system on a RAID 10 and want to use that as well for the datastore, I would create a new ZFS dataset for the datastore. This allows you to change certain ZFS properties on that dataset specifically.
>>>>
>>>> There are a few things to consider if you want to have the OS on the same disks as the datastore.
>>>> How fast are the disks? HDDs or SSDs?
>>>> If they are HDDs, then having the OS on separate disks is a good idea because HDDs will already be having a hard time to provide the IOPS for decent performance. If they are *decent* SSDs, you should be fine.
>>>>
>>>> No idea how easy it is to get stuff in Croatia, but this should give you some ideas: https://geizhals.eu/?cat=hdssd&xf=2028_256~4643_Power-Loss+Protection~4832_1~4836_2&sort=r
>>>>
>>>> 250 GiB is plenty of the OS, but anything smaller is hard to find or of dubious quality ;)
>>>>
>>>> Cheers,
>>>> Aaron
>>>>
>>>>
>>>> On 2/7/22 01:10, Tonči Stipičević wrote:
>>>>> I'm planning to use SUPERMICRO 721 box (4 x 2T sata) as PBS
>>>>>
>>>>> So, if I create zfs10 raid as boot drive , I have no more disks left for datastore, right ?
>>>>>
>>>>> BUT, is it possible to make directory on this / boot drive i.e. /mnt/datastore   and attach it as datastore ?   Is that a way-to-go and is there any disadvantages against separate 2 x 240g ssd as boot and 4 x 2T sata (zfs raid 10 ) for datastore?
>>>>>
>>>>> Actually I'ma having hard time finding 2 x 2,5" small  sata drives for boot ....
>>>>>
>>>>>    Thank you very much in advance
>>>>>
>>>>> BR
>>>>>
>>>>> Tonci
>>>>>
>>>>> srdačan pozdrav / best regards
>>>>>
>>>>> Tonči Stipičević, dipl. ing. elektr.
>>>>> direktor / manager
>>>>>
>>>>> SUMA Informatika d.o.o., Badalićeva 27, OIB 93926415263
>>>>>
>>>>> Podrška / Upravljanje IT sustavima za male i srednje tvrtke
>>>>> Small & Medium Business IT Support / Management
>>>>>
>>>>> mob: 091 1234003
>>>>> www.suma-informatika.hr
>>>>>
>>>>>
>>>>>
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>>>>
>>>
>>
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