This is a general question; so I have not included a Sysinfo image.
In backing-up a system on a second, internal hard-drive, the connection is I believe a parallel one that takes data in word-sized bytes, say 32 or 64 bit words. A serial backup, using an external hard-drive connected by a USB data cable, takes the data bit by bit and stores it on the drive. I don't know, but it is possible that the external drive has firmware that collects the bits into re-formed words. If my understanding and assumptions are correct, wouldn't it take far longer to create the system image by serial transfer? Perhaps all day and night? People do it; so I must not have a correct understanding of the serial transfer as opposed to the parallel one. Could someone better informed explain?
In backing-up a system on a second, internal hard-drive, the connection is I believe a parallel one that takes data in word-sized bytes, say 32 or 64 bit words. A serial backup, using an external hard-drive connected by a USB data cable, takes the data bit by bit and stores it on the drive. I don't know, but it is possible that the external drive has firmware that collects the bits into re-formed words. If my understanding and assumptions are correct, wouldn't it take far longer to create the system image by serial transfer? Perhaps all day and night? People do it; so I must not have a correct understanding of the serial transfer as opposed to the parallel one. Could someone better informed explain?