एक भंडारण सर्वर पीएसयू के लिए खोज

I recently posted abiout my search for a new storage server case. My next search involves finding a suitable पीएसयू! It seems in recent years it has got much harder to find the type of hardware I like to use, probably because the fashion has been to go smaller and sleeker which is generally more possible in this era of improved performance-per-watt devices. कैसे कभी, if you have space and you want systems to be cool, चुप, and efficient then large is still the way to go.

My current server has the excellent Corsair HX520 पीएसयू जो मैं चारों ओर के लिए पड़ा है 10 साल. This modular पीएसयू है 5 AUX connectors which can take SATA या मोलेक्स केबल. मैं अतिरिक्त मिला SATA केबल और है 1 मोलेक्स केबल और 4 SATA केबल जो मुझे दोनों मामले प्रशंसकों शक्ति की अनुमति देता है (मोलेक्स) और अप करने के लिए 16 HDDs (4 X 4 SATA केबल). I currently have 12 SATA अतिरिक्त क्षमता का एक छोटा सा के साथ संचालित ड्राइव.

I would be very happy with another HX520 power supply for my new server but of course being a 10 year old design it is no longer available, and I haven’t been able to find one second hand so I have been searching for something equivalent. The problem is that modern designs seem obsessed with providing silly numbers of GPU बिजली की तारें (silly given that a significant majority of people use either 0 या 1 GPUs, और बहुत कुछ वास्तव में उपयोग करें 2, अकेला छोड़ देना 3!) लेकिन उनमें से कई केवल है 3 AUX connectors with even the reasonably high power models only offering 4.

It is possible to get models with 5 or more AUX sockets but these are typically £200 or more for 1000W or more. My current server pulls 125W at the socket so this sort of पीएसयू would be complete overkill and would also be operating at only 10% capacity which is far below the optimum efficiency. एक 400W पीएसयू would be far more suitable (to give headroom for the systme under full load and for the drive spin up power draw at boot up).

One final frustration is that even if I am able to find a much older model second hand it is likely to be significantly less efficient that a modern design. With the server running 24.7 efficiency does make a difference. Is it too much to ask to find a modern equivalent of the HX520 with an 80 प्लस सोना (or better) rating for price of around £60?

Bare in mind there is a lot of misinformation about the amount of power required for systems with multiple HDDs. वहां एक है good thread on SuperUser where some typical figures are given and a similar discussion on Tom’s Hardware forums where a typical example is given…

WD Caviar Black (WD2001FASS)
Startup Current +12V: 1.16 amps
Startup Current +5V: 0.60 amps
Startup Power (संपूर्ण): 16.92में
पढ़ना लिखना: 10.70 वत्स
बेकार: 8.20 वत्स
समर्थन करना: 1.30 वत्स
नींद: 1.30 वत्स

The total spin up power at 17W is fairly typical. A WD Red 3Tb uses 15W.

साथ 16 of these drives there would be a maximum draw of 48W from the 5v line and 223W from the 12V line (271डब्ल्यू कुल). 125W एक के लिए अनुमति दी भी साथ सीपीयू under full load and another 100W for the rest of the system, the total maximum power draw is still only 471W. And let’s remember that the cpu and system will not be drawing maximum power at bootup time when the drives are at maximum. जांच करने के लिए अंतिम बात यह है कि पीएसयू can supply enough power on the 5V line and 12v line as these each have a maximum rating. Even my old Corsair HX520 can provide 24A at 5V which is a total of 120W (Basic secondary school physics lessons will tell you that Power = Current x Voltage) which is 2.5x the demand of this hypotetical 16-drive system.

In fact the area I would have to be careful of (if I didn’t have staggered spin up) मेरे पुराने HX520 है कि 3 12V lines which each have a maximum supply of 18A which means 216W. केवल 1 इनमें से ड्राइव शक्ति के लिए प्रयोग किया जाता है, इसलिए यदि मैं स्पिन करने की कोशिश की 16 HDDs simultaneously I would be slightly over my power budget. बेशक मैं कंपित स्पिन-अप की क्या ज़रूरत है और मैं केवल है 10 spinning-rust based drives so I am well within the limits. The lesson is clear though — in any build the limiting factor is more likely to be the maximum power provided per 12v line and not the total power the पीएसयू के लिए दर्जा दिया है. Once we know this it becomes apparent that there really is no need for a kilowatt पीएसयू for this sort of system, but having staggered spin up is immensely valuable and even with that, it is worth paying attention to the maximum rating of each 12v line, and the maximum rating for the 5v supply. Most modern सार्वजनिक क्षेत्र के उपक्रमों now use a single 12v line which can supply 50A+ which solves this problem.

It is worth noting that using “green” drives that like to go to sleep could cause issues if they all try to spin up at once. वे नहीं करते हैं तो आप जब कभी जगा एक लंबे प्रतिक्रिया देरी मिल जाएगा! I recommend using NAS grade (or better) HDDs for a storage system of this kind. Some good information and graphs about start-up power are available at 45Drives.com

My current server has 12 ड्राइव, 1 छापे कार्ड, तथा 2 टीवी कार्ड. It typically draws about 125W at the socket, with all the drives spinning and the टीवी streaming. No doubt if I hammer the server it will go higher, but for a glorified NAS a kilowatt power supply is utterly overkill. घड़ी के लिए महत्वपूर्ण बात यह है कि अगर आप कंपित स्पिन-अप सक्षम नहीं है बिजली आकर्षित है (which you can probably only enable with a इस RAID कार्ड). मैं कंपित स्पिन को है, तथा 2 की मेरी 12 ड्राइव SSDs के जो मुद्दे को स्पिन नहीं है. Assuming the new server also draws around 125W then a 500W पीएसयू इस समय पर होगा 25% भार, एक 1000 वाट, जबकि पीएसयू इस समय पर होगा 12.5% भार. Given an equal 80 plus rating the 500W पीएसयू is almost certain to be more efficient at this load, as well as being a reasonable price to start with.

मैं मुख्य ब्रांडेड अच्छी तरह से देखने मिला है पीएसयू manufacturers (Corsair, Seasonic, EVGA, Antec, एफएसपी, Bequiet, Silverstone, Thermaltake, CoolerMaster, XFX, भग्न डिजाइन, Enermax) और नीचे दी गई सूची बना निकटतम की मैं मिल सकता है. Most manufacturers don’t offer anything at all below 650W with 5 or more aux connectors. I’ve included a 750W Corsair as I’ve seen it on offer at a similar price to 650W models frequently.

Possible new models