SanDisk 2TB Extreme Portable SSD, USB-C USB 3.2 Gen 2, External NVMe Solid State Drive, up to 1050 MB/s, IP65 rated for dust and water resistance

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Ars Technica's Lee Hutchinson confirmed suffering not one, but two 2TB Extreme Pros dying. After filling about halfway, each drive met a slew of read and write errors. When he disconnected and reconnected the SSD, it showed it was unformatted with the drive completely wiped, including its file system. Wiping and reformatting didn't help, and this happened with two different units. SanDisk’s Extreme v2 is a bit bigger than the original, measuring 101 x 52 x 9 mm and weighing in at under 63 grams. With a carabiner loop integrated and a durable silicone coating, the Extreme v2 features a functional, portable, and enduring design for those on the move in tough conditions. But unlike the Extreme Pro, the Extreme v2’s case and internal structure is made of plastic rather than rigid aluminum. This makes for a small and compact design that is also pretty light, but a little less resistant to twists and bending.

USBコネクタへのストレスを低減して、USBコネクタ故障のリスクを減らします。 PCからの取り回し自由自在。やわらかケーブル添付添付のUSBケーブルがやわらかタイプだから、小型・軽量の本体を自由に設置できます。 衝撃＆振動に強いSSDで万が一の落下からデータを守る万が一の落下による衝撃や、移動中の振動から保存されたデータを守ります。 Interesting. I assumed that "refreshing" the charges/data was one of the routine maintenance tasks of the SSD controller and assumed that it would be done on a routine/scheduled basis. If the data is stable for 10 years then it makes sense that this is not done. I assumed the stable time was a lot less then 10 years. Hard drives based on magnetic retention of data are better in this respect, since the retention time is greater if the device is kept properly. We’re looking for 2TB superfast, extremely rugged, IP67+ rated external solid state drives. That disqualifies the likes of the popular Samsung T7 Touch which is not waterproof. Flash memory based drives have now implemented a special "wear" algorithm, such that new data is written on cells that are not progammed with data, and so files are moved continuosly across the drive to mentain a balance of erase/program for all the cells, otherwise if a file is continuously written and modified on the same memory cells, these will wear after those few hundred of cycles and not be able to be used anymore. That is why a worn out SSD drive, that has reached a TBW spec, will not retain the information for long.

J’emporte le 4 TO toujours avec moi, l'objectif étant de sauvegarder mon ordinateur en cas de cambriolage, d’incendies… Il me suit partout comme sur les pistes de skis, en voyage en avion, en soirée... There is an Anandtech article that discusses findings that a worn out drive (at the end of its endurance rating) can lose data much faster depending on temperature: https://www.anandtech.com/show/9248/the-truth-about-ssd-data-retention In a thread about 4TB Extreme Pro drives in a film and video editors subreddit, a Reddit user called ian__ wrote: Up to 2-meter drop protection and IP55 water and dust resistance mean this tough drive can take a beating.

Co BIY said:How often does an external SSD drive need to be powered up or plugged in to maintain the data ? Multiple DITs/Loaders/ACs on both coasts have experienced the exact same failure with these drives over the last month.The symptom seems to be that after a sustained write they will completely lose their filesystem and it's a total crap shoot [whether] you can recover it or not. The primary way you will see this is that the drive will unmount and you will not be able to get it to mount again, despite showing up in Disk Utility. You can sometimes recover it using DiskDrill's filesystem rebuild, but occasionally that does nothing. It persists with any filesystem type.The SSD controller and the NAND Flash memory used are unknown; however, we’d assume that it shares some DNA with the SN530, Western Digital’s entry level NVMe platform. Another thing about the flash memory is the indurance of the cell, how many times the memory cell accepts write/erase cycles until it starts to "wear" and not store anymore the information. That number is in the hundreds now days. If you read correctly the specification of an SSD drive, you will find a specification called "TBW", total bytes written. Dividing that number by the capacity of the drives yields the number of erase/write cycles that will wear the cells.

Portable SSD woes — SanDisk Extreme SSDs keep abruptly failing—firmware fix for only some promised Ars saw two 2TB units become unreadable, but SanDisk only confirms 4TB troubles. Crucial (クルーシャル) は、半導体メーカーであるMicron (マイクロン)の個人向け製品のブランド名です。Micron 3D NANDフラッシュテクノロジーを採用しており、低消費電力でありながら高いコストパフォーマンスを実現しています Now, to answer your question, powering up the drive containing that memory does not refresh it's content. You can keep it powered up continuously, the information stored in the transistors is NOT UPDATED OR REFRESHED by the power applied to device, unless you write again the information. This principle of refreshing the data from time to time is used in the RAM memory in computers, and losing power leads to losing data. The Sandisk Professional G-Drive SSD is a prime example of that; this rugged, external storage device still carries a premium on external hard drives but that is shrinking rapidly while other inherent features of SSD technology - speed, reliability, power consumption and size - have been improved. Pricing and availabilityA footnote about the branding. G-Tech (from which G-Drive is derived) started life as part of HGST, which was acquired by Western Digital. G-Tech survived as a rival to Seagate’s LaCie, supplying rugged, external, reliable storage devices and accessories to outdoor enthusiasts, prosumers and professionals. With the recent launch of Sandisk Professional, it is likely that G-Tech and G-Drive will be sunsetted in the near future. Uiflorin said:Now, to answer your question, powering up the drive containing that memory does not refresh it's content. You can keep it powered up continuously, the information stored in the transistors is NOT UPDATED OR REFRESHED by the power applied to device, unless you write again the information. This principle of refreshing the data from time to time is used in the RAM memory in computers, and losing power leads to losing data. X8 シリーズ 外付 ポータブル SSD 2TB PS4/Xbox One 動作確認済 Apple iPad Pro (iPad OS13以降、USB-C対応モデル) Windows Mac Chromebook Android タブレット スマートフォン Linux 3年保証 USB3.2 Gen2対応 最大読込速度 1050MB/秒 cで接続してますが内蔵SSDより気持ち速い気がします。 実際、ゲームデータを入れてマルチしたりもしますが内蔵SSDを使ってるらしい他の誰よりローディングが早く終わり先に入ってます。 容量も大きいのに見た目はiPhoneより小さく軽いのも良いです。 夏場は若干暑くなりますが気になるほどではありません。 次も必要になった場合にはまた同じ物を購入すると思います。