For readers and authors alike, it is important that journal papers remain available with a high probability. Two preservation time frames have to be distinguished:

Short to medium term preservation strategy is understood as a publisher's in-house activity. There are two aspects:
• Backup: SCIRP performs a real-time backup in multiple locations.
• Access System Redundancy: At SCIRP access is possible via more than one server. This ensures that there is little interruption and services are available with high reliability.

Long term preservation strategy is understood as a protection against discontinuation of the publisher as a whole, single journals, or single back issues. This can be due to business interruption or failure (bankruptcy, insolvency), some kind of catastrophic failure, technical failure, or natural disaster. Preservation services are offered by various organizations and national libraries. Many of these offers are not suitable to SCIRP’s needs.

SCIRP decided to archive all journal papers with Portico. Details are shown on SCIRP's Page at Portico. Portico maintains a dark archive for SCIRP. A dark archive is normally not visible. The archive will become available open access on Portico’s site only when a trigger event occurs:
(A) The publisher is no longer in business.
(B) One title is no longer offered.
(C) Back issues are not available for a period longer than 90 days.
(D) Catastrophic failure: The publisher has stopped providing online access to its publication for a period longer than 90 days.
For triggered content the Document Identifier (DOI) will link to the content now available on Portico’s site.

Migration: Portico converts the original source files of electronic journals to an archival format. Portico assumes responsibility for future content conversion. In this way, it will be possible to read SCIRP’s journal articles in the future. No matter what format future technologies require.

The Center for Research Libraries (CRL) conducted a preservation audit of Portico in 2009 and certified Portico as a trustworthy digital repository.

In summary, authors can be assured that their effort of writing a journal paper will not be in vain and the paper will be available for generations to come. Readers can be assured an article will be provided when calling the persistent link to the paper also in the future.