• Content Addressable Storage – systems that store data in such a way that once stored it cannot be modified
• Different vendors offer solutions and each uses a proprietary technique to identify the data
• Can be used in support of an archive solution – data cannot be modified once stored – retention policies can be set by some vendors
• Not a backup solution – does not require a second copy of data – only guarantees a non-changed copy of data
This is ideal for fixed content data.
Here our clients can write some data. The data is assigned an object identifier. It then gets written down to our storage and when we generate this unique identifier.
That file cannot be changed because if the file changes it will get a different identifier.