{"product_id":"lenovo-4xb7a13658-internal-solid-state-drive-16-tb-35-sas-3d-nand","title":"Lenovo 4XB7A13658 internal solid state drive 1.6 TB 3.5\" SAS 3D NAND","description":"\u003cdiv id=\"icepim-bulletpoints\"\u003e\u003cul\u003e\n\u003cli\u003eMainstream server SSD suitable for mixed read-write-intensive workloads\u003c\/li\u003e\n\u003cli\u003eEndurance of 3 drive-writes per day (DWPD)\u003c\/li\u003e\n\u003cli\u003e2.5-inch or 3.5-inch industry standard form factor with hot-swap tray\u003c\/li\u003e\n\u003cli\u003eSAS 12 Gbps interface\u003c\/li\u003e\n\u003cli\u003eActive-active dual port host interface\u003c\/li\u003e\n\u003cli\u003eProtect data integrity from unexpected power loss with Samsung's advanced power-lossprotection architecture\u003c\/li\u003e\n\u003cli\u003eSupports Self-Monitoring, Analysis and Reporting Technology (S.M.A.R.T)\u003c\/li\u003e\n\u003cli\u003eEnd-to-end data protection\u003c\/li\u003e\n\u003cli\u003eSupport 16 Initiator with Tag Command Queuing (TCQ) Command Set with a queue-depth of up to128 commands\u003c\/li\u003e\n\u003cli\u003eCompliant with SCSI Specification (SAS-3 \/ SPL-3 \/ SBC-4 \/ SPC-4 \/ SAM-5)\u003c\/li\u003e\n\u003cli\u003eRoHS Compliant\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\u003cdiv id=\"icepim-long-desc\"\u003e\u003cp id=\"ice_long_description\"\u003e\u003cb\u003eThinkSystem PM1645 Mainstream SAS 12Gb SSDs\u003c\/b\u003e\u003cbr\u003eThe ThinkSystem PM1645 Mainstream SAS 12Gb solid-state drives (SSDs) in capacities of up to 3.2 TBare next-generation high-performance SSDs suitable for a wide range of applications of running onThinkSystem servers. The PM1645 Mainstream SAS 12Gb SSD is shown in the following figure.\u003cbr\u003e\u003cbr\u003eEntry SSDs and Mainstream SSDs have similar read and write IOPS performance, but the key differencebetween them is their endurance (or lifetime) (that is, how long they can perform write operations becauseSSDs have a finite number of program\/erase (P\/E) cycles). Mainstream SSDs have better endurance butlower cost\/IOPS ratio compared to Entry SSDs. SSD write endurance is typically measured by the numberof program\/erase (P\/E) cycles that the drive incurs over its lifetime, listed as the total bytes of written data(TBW) in the device specification.\u003cbr\u003e\u003cbr\u003eThe TBW value assigned to a solid-state device is the total bytes of written data (based on the number ofP\/E cycles) that a drive can be guaranteed to complete (% of remaining P\/E cycles = % of remainingTBW). Reaching this limit does not cause the drive to immediately fail. It simply denotes the maximumnumber of writes that can be guaranteed. A solid-state device will not fail upon reaching the specifiedTBW. At some point based on manufacturing variance margin, after surpassing the TBW value, the drivewill reach the end-of-life point, at which the drive will go into a read-only mode.\u003cbr\u003e\u003cbr\u003eFor example, the 1.6TB PM1645 SSD has an endurance of 8,760 TB of total bytes written (TBW). Thismeans that for full operation over five years, write workload must be limited to no more than 4,800 GB ofwrites per day, which is equivalent to 3.0 full drive writes per day (DWPD). For the device to last threeyears, the drive write workload must be limited to no more than 8,000 GB of writes per day, which isequivalent to 5.0 full drive writes per day.\u003c\/p\u003e\u003c\/div\u003e\u003cdiv id=\"icepim-attributes\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertification\u003c\/td\u003e\n\u003ctd\u003eUL,TUV,FCC,IC,CB,CE, C-Tick, BSMI, KCC, VCCI\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTBW rating\u003c\/td\u003e\n\u003ctd\u003e8760\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMean time between failures (MTBF)\u003c\/td\u003e\n\u003ctd\u003e2000000 h\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eUncorrectable Bit Error Rate (UBER)\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 1 per 10^17 bits read\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnd-to-End Data Protection\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHot-swap\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eS.M.A.R.T. support\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWrite latency\u003c\/td\u003e\n\u003ctd\u003e60 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead latency\u003c\/td\u003e\n\u003ctd\u003e106 µs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRandom write (4KB)\u003c\/td\u003e\n\u003ctd\u003e90000 IOPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRandom read (4KB)\u003c\/td\u003e\n\u003ctd\u003e230000 IOPS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWrite speed\u003c\/td\u003e\n\u003ctd\u003e1200 MB\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRead speed\u003c\/td\u003e\n\u003ctd\u003e1000 MB\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData transfer rate\u003c\/td\u003e\n\u003ctd\u003e12 Gbit\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent for\u003c\/td\u003e\n\u003ctd\u003eServer\/workstation\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMemory type\u003c\/td\u003e\n\u003ctd\u003e3D NAND\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface\u003c\/td\u003e\n\u003ctd\u003eSAS\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSD form factor\u003c\/td\u003e\n\u003ctd\u003e3.5\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSSD capacity\u003c\/td\u003e\n\u003ctd\u003e1.6 TB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003ePower\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower consumption (write)\u003c\/td\u003e\n\u003ctd\u003e9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower consumption (read)\u003c\/td\u003e\n\u003ctd\u003e9 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eOperational conditions\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum operating altitude\u003c\/td\u003e\n\u003ctd\u003e4572 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating shock\u003c\/td\u003e\n\u003ctd\u003e1500 G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating vibration\u003c\/td\u003e\n\u003ctd\u003e20 G\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage relative humidity (H-H)\u003c\/td\u003e\n\u003ctd\u003e5 - 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating relative humidity (H-H)\u003c\/td\u003e\n\u003ctd\u003e5 - 95%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStorage temperature (T-T)\u003c\/td\u003e\n\u003ctd\u003e-40 - 85 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating temperature (T-T)\u003c\/td\u003e\n\u003ctd\u003e0 - 70 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\u003cth colspan=\"2\"\u003eOther features\u003c\/th\u003e\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003eCompliance certificates\u003c\/td\u003e\n\u003ctd\u003eRoHS\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\u003cdiv id=\"icepim-pdf-urls\"\u003e\u003cul\u003e\u003cli\u003e\u003ca href=\"https:\/\/cdn.iceshop.nl\/objects\/mmo_62330167_1588142548_2274_24863.pdf\" target=\"_blank\"\u003eleaflet\u003c\/a\u003e\u003c\/li\u003e\u003c\/ul\u003e\u003c\/div\u003e","brand":"Lenovo","offers":[{"title":"Default Title","offer_id":55308799443326,"sku":"4XB7A13658","price":2961.99,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0607\/0190\/0965\/files\/8707849c7e8c97613db1498c9bb930f1.jpg?v=1756125616","url":"https:\/\/www.backtotheoffice.co.uk\/products\/lenovo-4xb7a13658-internal-solid-state-drive-16-tb-35-sas-3d-nand","provider":"Back to the Office","version":"1.0","type":"link"}