{"product_id":"western-digital-wuh722020ble6l4-20tb-7200rpm-sata-lff-hdd","title":"Western Digital WUH722020BLE6L4 20TB 7200RPM SATA 6Gb\/s 3.5in Ultrastar DC HC560 Hard Drive","description":"\u003cp\u003eThe Western Digital WUH722020BLE6L4 is a 20TB SATA drive in the Ultrastar DC HC560 family, sold under WD part number 0F38785. The HC560 was WD's first drive with OptiNAND, which pairs the spinning disks with a small embedded flash device that holds drive metadata. Together with energy-assisted recording and a triple-stage actuator, that lets WD fit 20TB of CMR capacity on nine disks in a standard 3.5-inch, helium-sealed body.\u003c\/p\u003e\u003cp\u003eWD's data sheet lists a 512MB buffer, a sustained transfer rate of up to 291 MB\/s, a workload rating of up to 550TB per year and a projected MTBF of 2.5 million hours. The drive is meant for cloud-style and enterprise capacity tiers: object storage, distributed file systems, backup and disaster recovery targets, and big data sets. It is not a replacement for 10K SAS drives or flash where response time matters.\u003c\/p\u003e\u003cp\u003eWD's data sheet lists two SATA Base SE models of the 20TB HC560: WUH722020ALE6L4 (part 0F38755) and WUH722020BLE6L4 (part 0F38785), the one listed here. They are separate part numbers, so if you are matching an existing fleet or a qualified parts list, order the exact number you need. This model is 512e, uses the legacy pin 3 layout without Power Disable, and has no encryption. The SED version is WUH722020BLE6L1.\u003c\/p\u003e\u003cp\u003eCheck before ordering:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInterface: SATA 6Gb\/s. It works on SATA ports and most SAS controllers, but dual-port designs need the SAS model.\u003c\/li\u003e\n\u003cli\u003eFirmware support for 20TB drives in your HBA, RAID controller or NAS.\u003c\/li\u003e\n\u003cli\u003eTrays: this is a bare drive. HPE and Dell servers need OEM carriers and may flag non-OEM firmware.\u003c\/li\u003e\n\u003cli\u003eRAID layout: at 20TB per drive, dual parity or erasure coding is the common choice to cover long rebuilds.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Western Digital","offers":[{"title":"Default Title","offer_id":57995759943863,"sku":"WUH722020BLE6L4","price":0.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/1354\/7959\/files\/western-digital-wuh722020ble6l4-20tb-7200rpm-sata-lff-hdd-front.png?v=1793869728","url":"https:\/\/ictdevices.com\/products\/western-digital-wuh722020ble6l4-20tb-7200rpm-sata-lff-hdd","provider":"ICT Devices","version":"1.0","type":"link"}