Suitable UPS for 2 1812+ machines?

[Noah]

Hi all,

We are considering 2 1812+ with 6 WD RE4 2TB disks per machine. I understand that I need to protect this from power outages, so me too will finally be stepping into the wonderful world of UPS.

I don't need an UPS that will let me work on while there is a power outage (nothing else will work then either, so no need for the NAS to be on), so I only need it to detect a power outage and send a shutdown command to the NAS in order for it to be safe.

Ideally, but since I have no clue (as usual ) I would want one UPS to protect both the 1812+ machines, but I don't know if that's possible (can it send signals to 2 NAS machines at the same time).

Would anybody know a reliable UPS suitable for my situation? My vendor offered me an 'APC SMT750 Smart-UPS 750VA LCD 120V' (at 284 EUR), but he can offer me a blind ant and I wouldn't know if it was a solution.

How do I calculate the power needs/volt needs of the UPS in order to protect all these harddisks and the two synologies?

Thank you very much for help,

Bye,

[henkg]

Calculate power needs:
http://www.synology.com/products/spec.p ... #p_submenu
Power Consumption : 71.5W (Access)
Router: 20W or less (estimation)
(71.5 * 2) + 20 + margin: about 200W.

http://www.apc.com/products/family/inde ... tab=models
Estimated runtime for a SMT750 (200W): 22 minutes.

Is it possible to connect more than one DS to the UPS? Yes, but not with a cable to the UPS.
Connect the UPS with one DS. In Disk Station Manager of that DS you can add slaves (up to five slaves, in your case: the other DS). The master DS (the one connected to the UPS) communicates over LAN to the other DS, the slave. Thats why the router should be on the UPS also.

(There is another advantage to connect the router to the UPS. If the DS setting for entering safe mode is set to for example 5 minutes, there will be enough power left to keep your router going for hours. With one battery powered laptop you will still have internet on that laptop)

I can't tell if the SMT750 is perfect for you. I own a budget model (BE700G-GR, 230V).

[Noah]

Calculate power needs:
http://www.synology.com/products/spec.p ... #p_submenu
Power Consumption : 71.5W (Access)
Router: 20W or less (estimation)
(71.5 * 2) + 20 + margin: about 200W.

http://www.apc.com/products/family/inde ... tab=models
Estimated runtime for a SMT750 (200W): 22 minutes.

Is it possible to connect more than one DS to the UPS? Yes, but not with a cable to the UPS.
Connect the UPS with one DS. In Disk Station Manager of that DS you can add slaves (up to five slaves, in your case: the other DS). The master DS (the one connected to the UPS) communicates over LAN to the other DS, the slave. Thats why the router should be on the UPS also.

(There is another advantage to connect the router to the UPS. If the DS setting for entering safe mode is set to for example 5 minutes, there will be enough power left to keep your router going for hours. With one battery powered laptop you will still have internet on that laptop)

I can't tell if the SMT750 is perfect for you. I own a budget model (BE700G-GR, 230V).

An extremely clear answer, Henk, thank you very much

[Noah]

Calculate power needs:
http://www.synology.com/products/spec.p ... #p_submenu
Power Consumption : 71.5W (Access)
Router: 20W or less (estimation)
(71.5 * 2) + 20 + margin: about 200W.

http://www.apc.com/products/family/inde ... tab=models
Estimated runtime for a SMT750 (200W): 22 minutes.

Is it possible to connect more than one DS to the UPS? Yes, but not with a cable to the UPS.
Connect the UPS with one DS. In Disk Station Manager of that DS you can add slaves (up to five slaves, in your case: the other DS). The master DS (the one connected to the UPS) communicates over LAN to the other DS, the slave. Thats why the router should be on the UPS also.

(There is another advantage to connect the router to the UPS. If the DS setting for entering safe mode is set to for example 5 minutes, there will be enough power left to keep your router going for hours. With one battery powered laptop you will still have internet on that laptop)

I can't tell if the SMT750 is perfect for you. I own a budget model (BE700G-GR, 230V).

An extremely clear answer, Henk, thank you very much

But for the calculation maybe incorrect

Your calculation is the NAS itself, not the disks included in it. If I add 8 disks it will be 8 * 11 = 88 Watts more. Times two Synologies = 176 Watt. Plus your 200 W, + slack, I think I will need a 500 W UPS

[henkg]

"But for the calculation maybe incorrect"
Yes and no. For the calculation I used the 71.5 Watt access specs from Synology. These specs must be with a number of disks (71,5W is too much for just a processor and a fan), but they do not state how many.

Anyway, I do not think you need a more powerful UPS than a SMT750.

[Noah]

"But for the calculation maybe incorrect"
Yes and no. For the calculation I used the 71.5 Watt access specs from Synology. These specs must be with a number of disks (71,5W is too much for just a processor and a fan), but they do not state how many.

Anyway, I do not think you need a more powerful UPS than a SMT750.

http://www.synology.com/support/faq_sho ... 0&lang=enu

[myCloud]

Our CyberPower UPS shows 72W out and 90 minutes remaining powering our DS1512+ with the disks lightly active, plus two routers.

[Noah]

Our CyberPower UPS shows 72W out and 90 minutes remaining powering our DS1512+ with the disks lightly active, plus two routers.

Thanks MyCloud

I believe you, but not that I understand it, per my above calculation. I take it these are not 'green' disks you are using.

[myCloud]

Our CyberPower UPS shows 72W out and 90 minutes remaining powering our DS1512+ with the disks lightly active, plus two routers.

Thanks MyCloud

I believe you, but not that I understand it, per my above calculation. I take it these are not 'green' disks you are using.

These are the new 1 TB per platter Seagates.

[Noah]

Our CyberPower UPS shows 72W out and 90 minutes remaining powering our DS1512+ with the disks lightly active, plus two routers.

Thanks MyCloud

I believe you, but not that I understand it, per my above calculation. I take it these are not 'green' disks you are using.

These are the new 1 TB per platter Seagates.

It might be correct but then again it might not ( ); 5 disks times say 12W = 60 W. Leaves 12 W only for the synology, although that is really a small computer in itself.

[necrosis]

I am using an APC Back-UPS XS 1000 with *ONE* DS1812+ with eight (8) 2TB HD203WI Samsung's.

61 Min
80w Load (13%)

With that I would say this unit should be OK for for two (2) DS1812+ units.

I have one DX510 connected to my DS1812+ but it only has one HDD in it (just to test the unit till my main drives come in) which I doubt throws the numbers off a lot. I have a second DX510 on order and 10 more 2TB drives to fill both. I planned on this one APC running all 3 and so far it looks like I should be OK.