so i found a second hand thing with homeassistant pre installed the price is 60 euros, here are the specs:
4 gb ram 2x 2gb ddr3
1x 16gb ssd
its a Intel celeron
already thanks for any help i can get
The ssd is too small, you need to invest in a bigger one
I’m with @Mats789, I would opt for at least a 128GB SSD myself. A lot depends on exactly how much you intend to do with it, you may outgrow that system pretty fast if you start loading it up. I outgrew my rPi 8GB SD, then my rPi 8GB SSD and will outgrow my VM 16GB soon enough.
it should be enough. just swap to a bigger SSD.
my setup is a Fujitsu Futro S720, 1.65 Ghz, 2 GB RAM and SSD X-Star Bull Shark 128GB mSATA → ~35 euro
1 Like
You might find out that the ssd actually is only some cheaper emmc that can’t really cope well with HA hammering on it with small writes (write amplification is the dead sentence here).
Also intel celeron doesn’t say anything at all, they exist like more than 2 decades already.
Last thing: energy consumption! Your HA server will run 24-7 and it can make a big difference in the end of the year (energy bill!) if you have a modern (still cheap) arm rockchip based server which sits and works at around 1W or you have some 15 year old based celeron system with 32nm lithography which will draw already more than 30W for a idle state.
1 Like
I mean given a choice between that and a Home Assistant Green - I’d be going for the Home Assistant Green.
Very sad though that HA green only got a non-replaceable eMMC as storage option. I expect threads about failing greens (because of worn flash) rather sooner than later.
(You can bookmark this post and set a auto reminder for 1 or 2 years 
)
Oh I didn’t know it was non replaceable 
Hopefully the situation should be getting better as the team have done a huge amount in the last few years to reduce writes, for example the database - which was one of the biggest killers of SD cards for the Pi.
The problem often are not the amount of writes but the ineffency how it is written to flash. The system should try to always write a full page worth of data - otherwise bits are wasted (not written with data but flash worn anyways). Technically it can be that writes are minimized, for example by 50% (before every minute 2kb, after every minute 1kb) but the worn flash is exactly still the same (when the page size is 4 or 8kb in this example).
Important to know that all type of flash works like this (can only write in pages). What makes a difference are real(!) good SSD’s. They have a RAM (often consists of SLC cells) just to buffer data till it is enough to fill a page and don’t waste the valuable flash cells which can only be written few thousand times.
1 Like
how did you install HA on the S720?
Proxmox on top, HomeAssistant as a virtual machine. If you need details, you should find tutorials on the Internetz. Anyway, I recommend the setup, especially because of super nice backups that you can set up in Proxmox for the whole HA VM.
60 euros are not a bad price… it depends on the form factor and the power consumption.
Keep in mind that your server (for that’s what it is a HA instance) will be on 24h all year long. A single watt saved on consumption is half a kw/h a year.
My choice is fallen on a cheap thin client 4core 4GB ram with an old intel cpu. Bought used for 50 euros, coupled with a data cable and a 128GN ssd all told around 100€ in Hw.
But the thing has the performance of a fairly sized PC, much more than a raspi, consuming (verified) around 15watts/h
Saving 30W of consumption, at 25c€/kwh means saving 60€/year.
You’ll spend a little more at the start of your journey but wilt a very short return on investment.