0एक 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

• Cor­sair RM750 (750में; £ 75; 80+ सोना)
• EVGA Super­NOVA 650 जी + (650में; £ 85; 80+ सोना)
• EVGA 650 BQ (650में; £ 74; 80+ पीतल)

अब तक पीएसयू’s I am aware of to search for second hand are…

• Cor­sair HX520
• Cor­sair HX620
• Cor­sair HX550
• Cor­sair HX650
• Season­ic 660XP2
• Season­ic 650KM3