File folding describes the process of checking the data in the most recent snapshot, and, if it is identical to the snapshot currently being created, just referencing the previous snapshot instead of taking up disk space writing the same data in the new snapshot. Disk space is saved by sharing unchanged file blocks between the active version of the file and the version of the file in the latest snapshot, if any.

/Mitko

-----Original Message----- From: Kumar, Rahul [mailto:rahul.kumar@eds.com] Sent: den 12 december 2002 05:19 To: stefan.holzwarth@adac.de; mats.oberg@tietoenator.com; toasters@mathworks.com Subject: RE: file folding impact

BTW what does this option do

Rahul

-----Original Message----- From: stefan.holzwarth@adac.de [mailto:stefan.holzwarth@adac.de] Sent: Wednesday, December 11, 2002 7:08 PM To: mats.oberg@tietoenator.com; toasters@mathworks.com Subject: AW: file folding impact

Since 2 months we use filefolding on all volumes. (F760,2TB,3000 User, only cifs) No remarkable impact in cpu usage. No trouble. Snapshotsize decreasing a little. Regards Stefan Holzwarth

-----Ursprüngliche Nachricht----- Von: Öberg Mats [mailto:mats.oberg@tietoenator.com] Gesendet: Mittwoch, 11. Dezember 2002 14:20 An: toasters@mathworks.com Betreff: file folding impact

Hi, I'm thinking about enabling file folding on one of our filers. Have anybody tried this? If so, what kind of performance decrease/size gain can be expected from enabling it?

---- Mats