- User states (glossary)
For these reasons it's important to have tile server solution that is flexible.
PMA.core supports the following storage media:
D:drives and partitions)
Our tile server introduces root directories: virtual mounting points that can point to any of these types of storage, where you have your slides available.
Most importantly, you can configure your root-directories in a hybrid fashion, with some storage pointing to traditional hard disks, and other (perhaps long term) storage pointing to cloud resources.
This hybrid configuration model also means you can scale easily over time: you can start with a setup whereby your slides are mostly placed on a (big) local hard disk. After a while, you switch over to your organization's network storage. Even at a later stage, you can transparently migrate to S3-compliant cloud storage. When you have an external collaborator that temporarily wants to share their slide collection with you, you can ask them to setup an FTP server and patch a root-directory through to that one.
Root-directory resources can have authentication and impersonation information attached to them. In addition, PMA.core has its own access control lists to determine what user_groups and individual users can see and do (according to the CRUD principle).
A comprehensive blog article on the subject of storage and image management is provided at our blog.