I would like to know, if it is possible to use a SSD as the only drive for a Raspberry PI.
The reason is, I would like to use it as database- and webserver and I am not sure about the lifetime of SD-cards.
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Another option could be to use an alternative to the Raspberry Pi with an SATA-interface, like the Cubieboard (see this list on Wikipedia).
On the other hand, SD cards are not as unreliable as you might think.
You can boot from the SD card then just use an attached SSD, but you can not get around using the SD card for booting.
Once booted you can make the SD card read only and make sure all the software etc is running of the SSD
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