![]() Because they are so portable and data can be easily copied from them, removable media pose a risk in terms of data security.Errors with writing to the media ('burning') are also quite common. In addition to being environmentally sensitive, removable media can be easily physically damaged (e.g.Estimated life of a CD, DVD stored at above 83 degrees and 50% humidity is as low as two years, far short of the minimum retention periods that apply to most research data. Although use of CDs, DVDs and USB sticks is common, their longevity is not guaranteed, especially if they are not stored correctly (ideally in a steady range of about 65-71 degrees Farenheit and 35 to 45% relative humidity).This can make accessing your data later on difficult, especially if you do not have good systems in place for identifying and describing the data. Removable media are often not big enough for all the research data, so multiple disks or drives are needed.These are rarely a suitable option for long-term retention of your research data, especially master copies: USB memory sticks) makes them an attractive option for storage. The low cost and portability of removable media like CDs, DVDs and flash memory devices (i.e. ![]() Local drives in PCs and laptops may be lost or stolen leading to an inevitable loss of your data with minimal or no chance of recovery. ![]() Local machines may also be replaced, upgraded, and/or re-allocated to other people, at which time data on those machines may be lost or at risk of being inappropriately accessed.It is not recommended that you store files on individual desktop or laptop PCs. From time to time, local hard drives do fail and are often not backed-up. "the C: drive") are convenient for temporary working copies of data, but should not be used to permanently store master copies of research data. Storing files on individual desktop or laptop PCs is not recommended.
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