<![CDATA[Add Data Integrity Support (e.g. Parchive) to .pa Format]]>One feature most archive formats are lacking is archive integrity/recovery. RAR has had this capability from the start and thus remains the format of choice for those concerned with data loss from events such as storage media bit rot: https://en.wikipedia.org/wiki/Data_degradation

It would be a shame to not use this opportunity to also incorporate data integrity.

PAR1 and PAR2 specifications are available on the net; however, I’m not sure where to find the actual PAR3 specification, but maybe you could start here: https://www.livebusinesschat.com/smf/index.php?topic=2118.0 and here: https://multipar.eu/

]]>https://forums.powerarchiver.com/topic/5552/add-data-integrity-support-e-g-parchive-to-pa-formatRSS for NodeFri, 06 Mar 2026 12:29:34 GMTFri, 02 Dec 2016 03:59:46 GMT60<![CDATA[Reply to Add Data Integrity Support (e.g. Parchive) to .pa Format on Wed, 16 Feb 2022 19:47:25 GMT]]>It would be very nice to see some integrated parity/recovery record options for the .pa format.
So far history wise, I think only WinACE and WinRAR has/had that feature. ACE is dead and RAR is not my cup of tea over all.
PowerArchiver has grown a lot and the PA format is a nice development. It would really be great to see some sort of recovery data option, to add such directly to the archive, or just create PAR2/PAR3 data to the archive in one seamless process.

]]>https://forums.powerarchiver.com/post/38400https://forums.powerarchiver.com/post/38400Wed, 16 Feb 2022 19:47:25 GMT<![CDATA[Reply to Add Data Integrity Support (e.g. Parchive) to .pa Format on Thu, 04 Feb 2021 06:57:30 GMT]]>I currently create Par2 files before I save everything to Blu-ray. It’s not a hard additional process but it would be cool if PA files had it included as a option.

]]>https://forums.powerarchiver.com/post/38164https://forums.powerarchiver.com/post/38164Thu, 04 Feb 2021 06:57:30 GMT<![CDATA[Reply to Add Data Integrity Support (e.g. Parchive) to .pa Format on Thu, 22 Dec 2016 09:07:04 GMT]]>what you could do in the mean time is add support for par3 if possible to powerarchiver?

]]>https://forums.powerarchiver.com/post/34132https://forums.powerarchiver.com/post/34132Thu, 22 Dec 2016 09:07:04 GMT<![CDATA[Reply to Add Data Integrity Support (e.g. Parchive) to .pa Format on Fri, 02 Dec 2016 15:12:03 GMT]]>@welhaux moved this to open forums.

]]>https://forums.powerarchiver.com/post/33719https://forums.powerarchiver.com/post/33719Fri, 02 Dec 2016 15:12:03 GMT<![CDATA[Reply to Add Data Integrity Support (e.g. Parchive) to .pa Format on Fri, 02 Dec 2016 10:45:15 GMT]]>we could add support for .par to be generated after .pa.

It would not possible to add recovery directly into .pa until pa.v2. Right now .pa format structure is based on 7zip. Plan is to move to v2 version of .pa when we exaust current codec and filters options, so we know all the requirements needed when doing v2.

And we still have a way to go with codecs and filters. Right now minimum plan next is to add jpeg and speed up fma-rep1 deduplication filter. After that we could go on to mp3 and maybe some lz/dictionary based text codec.

]]>https://forums.powerarchiver.com/post/33699https://forums.powerarchiver.com/post/33699Fri, 02 Dec 2016 10:45:15 GMT