{"product_id":"dell-20tb-sas-hot-swap-hard-drive-with-tray-t59dd","title":"Dell 20TB SAS 12Gb\/s Hot-Swap 7200RPM (512e) 3.5-inch Internal Hard Drive with Tray for PowerEdge Servers - T59DD","description":"\u003cp\u003eDell part T59DD is a 20TB SAS hard drive that arrives mounted in a Dell hot-plug tray. It spins at 7200 RPM, links at 12Gb\/s, and fits the 3.5-inch bays in PowerEdge servers. Dell also lists it as 161-BBTX, and labels may print 0T59DD. These names point to one part.\u003c\/p\u003e\n\u003ch2\u003eWhere 20TB sits in Dell's 3.5-inch SAS range\u003c\/h2\u003e\n\u003cp\u003eDell's server configurators offer 12TB, 16TB, 20TB, and 22TB SAS drives in the 3.5-inch size. Raw space adds up like this.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eDrive size\u003c\/th\u003e\n\u003cth\u003eFour bays (R250)\u003c\/th\u003e\n\u003cth\u003eTwelve bays (R760)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e12TB\u003c\/th\u003e\n\u003ctd\u003e48TB\u003c\/td\u003e\n\u003ctd\u003e144TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e16TB\u003c\/th\u003e\n\u003ctd\u003e64TB\u003c\/td\u003e\n\u003ctd\u003e192TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e20TB (this drive)\u003c\/th\u003e\n\u003ctd\u003e80TB\u003c\/td\u003e\n\u003ctd\u003e240TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003e22TB\u003c\/th\u003e\n\u003ctd\u003e88TB\u003c\/td\u003e\n\u003ctd\u003e264TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe 20TB size is a middle step. It adds 25% more room per bay than 16TB, and it sits 2TB below the 22TB drive.\u003c\/p\u003e\n\u003ch2\u003eRAID and rebuilds\u003c\/h2\u003e\n\u003cp\u003eFour 20TB drives in RAID 5 give about 60TB usable. RAID 6 or RAID 10 gives 40TB. Twelve drives in RAID 6 leave about 200TB. Reading all 20TB at once takes a day or more under load, so many teams pick RAID 6 or keep a hot spare at this size.\u003c\/p\u003e\n\u003ch2\u003eFit notes\u003c\/h2\u003e\n\u003cp\u003eDell lists its 20TB SAS drive on 15th generation servers such as the R250 and R750xs. Parts sellers also list it for 16th generation models. On a 14th generation server, check Dell's drive list for your exact model first.\u003c\/p\u003e\n\u003cp\u003eThe drive needs a SAS-capable backplane and a PERC or HBA card. Plain SATA ports can't run it. A 2.5-inch backplane will not take it either. The 512e format shows 512-byte sectors to the host and keeps 4K sectors inside, which current controllers handle.\u003c\/p\u003e\n\u003ch2\u003eQuick answers\u003c\/h2\u003e\n\u003ch3\u003eIs T59DD the same as 0T59DD?\u003c\/h3\u003e\n\u003cp\u003eYes. Dell prints a leading zero on many labels. It is one part.\u003c\/p\u003e\n\u003ch3\u003eDoes the tray come with it?\u003c\/h3\u003e\n\u003cp\u003eYes. The drive is a Dell customer kit, so the tray is already fitted.\u003c\/p\u003e\n\u003ch3\u003eCan it go in a 2.5-inch bay?\u003c\/h3\u003e\n\u003cp\u003eNo. It only fits 3.5-inch bays.\u003c\/p\u003e\n\u003ch2\u003eT59DD details\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDell\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePart number\u003c\/th\u003e\n\u003ctd\u003eT59DD (label: 0T59DD)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eDell code\u003c\/th\u003e\n\u003ctd\u003e161-BBTX\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCapacity\u003c\/th\u003e\n\u003ctd\u003e20TB\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\"\u003eSector format\u003c\/th\u003e\n\u003ctd\u003e512e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eForm factor\u003c\/th\u003e\n\u003ctd\u003e3.5-inch large form factor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHot-plug\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eTray\u003c\/th\u003e\n\u003ctd\u003eIncluded (Dell customer kit)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eFits\u003c\/th\u003e\n\u003ctd\u003ePowerEdge 15th and 16th generation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Dell","offers":[{"title":"Default Title","offer_id":62810683867507,"sku":"T59DD","price":1470.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0992\/9546\/1747\/files\/dm_t59dd_1.jpg?v=1778011428","url":"https:\/\/cpurepublic.com\/products\/dell-20tb-sas-hot-swap-hard-drive-with-tray-t59dd","provider":"CPU Republic LLC","version":"1.0","type":"link"}