This discussion has yet to touch on the actual service used in the cloud-based backup. All of these operations add overhead to the connection and affect performance. ChronoSync also employs a Safe Copy algorithm that copies the files to a temporary filename at the cloud service, confirms success, and only then replaces any existing file of the same name with the updated file. ChronoSync updates metadata such as dates and attributes so that they match the source files on the local Mac. Symmetric connections, where the upload and download speeds are the same, are usually available for an additional fee, but Asymmetric connections seem to be the norm in the USA.īeyond the raw performance possibilities, a ChronoSync backup to a cloud service will incur substantial overhead beyond just copying data. There are may connections that are faster and some slower. So files being backed up to a cloud service over this connection are being sent substantially slower than files being retrieved from the service. Downloads, files and data flowing to the connected computer, are faster than data that flows from the computer to some destination or site on the Internet. (Learn about ‘Mbps’ at: ) This discrepancy in upload versus download speed is called an Asymmetric Connection. Take, for example, a local internet service that actually provides 7.5Mbps Download and 1.4Mbps Upload speeds. In addition, these numbers are usually expressed separately in Upload and Download speeds. These wired connections advertise ‘maximum’ speeds that may or may not be achievable from a specific connection point. In the USA, most homes have ‘Fast’ internet provided by telephone or cable television services. In simple terms, backing up to a cloud-based file system can be at least 100 times slower than a local file system (Internal or external hard drive or SSD).įor those interested in the details, the first topic is Internet Connections. This sounds great Let’s get started! Except there is always a “but.” The overriding issue with cloud-based storage it that it can be slow. When evaluating any cloud-based backup solution, security needs to be the top priority. In addition, some services include the capability to further encrypt data stored with the service and ChronoSync supports these features where available. ChronoSync defaults to industry-standard, secure protocols when communicating with cloud services. Being internet-based, security is an important feature of any cloud-based backup solution. This ubiquitous availability makes it an attractive solution to backups, especially on-the-go. Cloud-based Mac backup using ChronoSync offers cost-effective storage available from virtually any location with an internet connection.
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