Any copies you keep on-site will need to be appropriately protected and even with protection they will only be accessible if you can access your usual working location. It is a hard copy, which means it needs to be stored in a physical location. Its main advantage is also its main disadvantage. The first option is the “traditional” one and it may still have its uses in some situations. You can backup to an offline storage media, you can backup to a public cloud or you can backup to another private cloud. If you’re working in a private cloud (or in an old-school data center), you basically have three options (which you can use simultaneously if you wish). Understand that in the private cloud, data backups are entirely your responsibility While this latter possibility is highly unlikely, at least if you stick with mainstream, reputable, public-cloud vendors, it cannot be completely discounted. The second reason is that, at the end of the day, public cloud platforms are third-party vendors, who can experience outages and who could even disappear overnight. This means that if someone with the right level of access gives an instruction to delete your data then that is exactly what a public cloud platform will do and if it turns out later that the instruction was wrong (or malicious) then that is your problem. Anything which relates to how an internal user treats your data is your responsibility, as are any issues/threats which arise through poor management on your side. The main reason is that public cloud vendors only take responsibility for security their platform against external threats. In practice, there are a couple of reasons why you might want to organize additional backups. In principle, this should be enough to ensure that they can recover quickly after any issue. For many SMBs one of the major benefits of working in the public cloud is that their data is automatically backed up. It’s hardly a surprise they’ve become so popular with businesses of all descriptions, especially SMBs. Public cloud platforms are flexible, scalable and very cost-effective. Recognize the limitations of public cloud platforms This is known as “cloud-to-cloud backup” and is becoming increasingly popular. In fact, ideally, they should be able to backup data from a cloud to a cloud. Ideally data backup vendors should be able to do both. The first half is being able to backup data which is stored in a cloud and the second half is being able to backup data to the cloud. Look for a data backup vendor who has experience with the cloud you want more than one copy of your data and you want at least one copy to be kept off-site. The general principles, however, are still pretty solid, i.e. As you may have guessed, this rule of thumb was developed long before the cloud, which has changed the practicalities of data backups somewhat. You have three copies of your data (including your production data), stored on two different media, with one copy being stored offsite. The long-standing approach to data backups is generally known as the 3-2-1 strategy.
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