{"product_id":"western-digital-ultrastar-dc-hc570-22tb-sas-wuh722222al5204","title":"WD Ultrastar DC HC570 22TB SAS 12Gb\/s 7200RPM 512MB Cache (512e \/ SE) Data Center 3.5-inch Internal Hard Drive - WUH722222AL5204","description":"\u003cp\u003eThe WD Ultrastar DC HC570 WUH722222AL5204 is a 22TB SAS hard drive for data center arrays. It spins at 7200 RPM, links at 12Gb\/s, and carries a 512MB cache. WD's part number for it is 0F48052.\u003c\/p\u003e\n\u003cp\u003eThe HC570 packs ten platters into a helium-filled case. It uses CMR recording with ePMR, plus OptiNAND flash for ArmorCache power-loss protection. WD rates it for 550TB of workload a year and a 2.5 million hour MTBF.\u003c\/p\u003e\n\u003ch2\u003eSAS drives and what they need\u003c\/h2\u003e\n\u003cp\u003eA SAS drive needs a SAS controller or backplane. A plain SATA port won't accept it. Many JBODs and storage servers are built around SAS, so this model drops straight into them. Our \u003ca href=\"\/blogs\/buying-guides\/sas-vs-sata-server-hard-drives\"\u003eSAS vs SATA guide\u003c\/a\u003e walks through the differences.\u003c\/p\u003e\n\u003cp\u003eThe drive itself tops out at 291 MB\/s, so the 12Gb\/s link has spare room. That room matters most when several drives share one expander lane. One full pass over 22TB takes about 21 hours at best. WD lists 6.0 W at idle, so twelve drives idle near 72 W.\u003c\/p\u003e\n\u003cp\u003eUltrastar drives once carried the HGST name. Many labels and older listings still say HGST, but Western Digital now sells the line under its own brand.\u003c\/p\u003e\n\u003ch2\u003eWUH722222AL5204 specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eWestern Digital\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSeries\u003c\/th\u003e\n\u003ctd\u003eUltrastar DC HC570\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eModel number\u003c\/th\u003e\n\u003ctd\u003eWUH722222AL5204\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWD part number\u003c\/th\u003e\n\u003ctd\u003e0F48052\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e22TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eSAS 12Gb\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSpindle speed\u003c\/th\u003e\n\u003ctd\u003e7200 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCache\u003c\/th\u003e\n\u003ctd\u003e512MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSector format\u003c\/th\u003e\n\u003ctd\u003e512e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eRecording\u003c\/th\u003e\n\u003ctd\u003eCMR\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSecurity\u003c\/th\u003e\n\u003ctd\u003eBase SE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSustained transfer\u003c\/th\u003e\n\u003ctd\u003eUp to 291 MB\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eIdle power\u003c\/th\u003e\n\u003ctd\u003e6.0 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e670 g max\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch2\u003eQuestions about the WUH722222AL5204\u003c\/h2\u003e\n\u003ch3\u003eWhat is ePMR?\u003c\/h3\u003e\n\u003cp\u003eePMR is WD's enhanced perpendicular recording. It still writes standard, non-overlapping tracks, so the drive counts as CMR.\u003c\/p\u003e\n\u003ch3\u003eCan I use it in a NAS?\u003c\/h3\u003e\n\u003cp\u003eOnly if the NAS has a SAS controller. Most home and small-office NAS boxes use SATA bays, so they can't run this drive.\u003c\/p\u003e\n\u003ch3\u003eWhat does Base SE mean?\u003c\/h3\u003e\n\u003cp\u003eIt means no hardware encryption. The self-encrypting SAS model is WUH722222AL5201, part number 0F48051.\u003c\/p\u003e\n\u003ch3\u003eIs there a SATA version?\u003c\/h3\u003e\n\u003cp\u003eYes. The SATA drive is WUH722222ALE6L4, part number 0F48155. It matches this one on capacity, speed, and cache.\u003c\/p\u003e\n\u003ch3\u003eWUH722222AL5204 or WUH722422AL5204?\u003c\/h3\u003e\n\u003cp\u003eThey sit one digit apart. WUH722222AL5204 is the HC570. WUH722422AL5204 is the HC580 22TB SAS model, part number 0F62791. Check the digit before you install.\u003c\/p\u003e","brand":"WD HGST","offers":[{"title":"Default Title","offer_id":62810465468787,"sku":"WUH722222AL5204","price":1165.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/9546\/1747\/files\/0f48052_1.jpg?v=1778008069","url":"https:\/\/cpurepublic.com\/products\/western-digital-ultrastar-dc-hc570-22tb-sas-wuh722222al5204","provider":"CPU Republic LLC","version":"1.0","type":"link"}