Even if I don't run Windows, it is in-deed a setting in IIS ... Google searches show it's a common problem with IIS 7 (at least) and IIS 8.
Can large courses (over 2Gig) be backed up and restored on other platforms?
yes.
Example of one I help administer:
CentOS el6.x86_64
PHP 5.5.30 Zend Engine v2.5.0, mysql 5.5.31, Apache/2.2.15 (Unix)
16 Gig Mem, 2 TB disk, Intel(R) Xeon(R) CPU X5550 @ 2.67GHz, 4 cores
on VMWare:
site is for an ISD 5044 Students/Teachers - used daily. So much so the only time I can update/upgrade is after midnight!
423 courses total ... courses whose backup are over 1 Gig:
1.1G .//backup-moodle2-course-184-ap_psych-20150830-1526.mbz
1.1G .//backup-moodle2-course-385-hpmala-20150830-1735.mbz
1.2G .//backup-moodle2-course-47-diabetes-20150830-1342.mbz
1.2G .//backup-moodle2-course-9-pre-calculus-20150830-1321.mbz
1.3G .//backup-moodle2-course-223-drawing_ii-20150830-1612.mbz
1.4G .//backup-moodle2-course-4-government-20150830-1248.mbz
1.5G .//backup-moodle2-course-126-algebra_1-20150830-1435.mbz
1.5G .//backup-moodle2-course-243-tag-20150830-1641.mbz
1.5G .//backup-moodle2-course-61-geometry_preap-20150830-1348.mbz
1.6G .//backup-moodle2-course-215-bio_bb-g-20150830-1602.mbz
1.6G .//backup-moodle2-course-224-ceramics-20150830-1614.mbz
1.6G .//backup-moodle2-course-40-forensics-20150830-1337.mbz
1.8G .//backup-moodle2-course-266-psy-20150830-1651.mbz
1.8G .//backup-moodle2-course-426-psych-20150830-1742.mbz
2.1G .//backup-moodle2-course-323-7thtcela-20150830-1714.mbz
2.1G .//backup-moodle2-course-7-fa-photo-20150830-1317.mbz
2.1G .//backup-moodle2-course-90-español_1-20150830-1408.mbz
2.2G .//backup-moodle2-course-108-fa-arti-20150830-1425.mbz
2.7G .//backup-moodle2-course-287-simoneaux-20150830-1704.mbz
2.7G .//backup-moodle2-course-370-bsoccer-20150830-1723.mbz
2.7G .//backup-moodle2-course-99-geo-20150830-1416.mbz
2.8G .//backup-moodle2-course-222-art_one-20150830-1608.mbz
3.3G .//backup-moodle2-course-231-algebra_2_pap_tag-20150830-1618.mbz
3.4G .//backup-moodle2-course-180-alg2pap-20150830-1518.mbz
3.6G .//backup-moodle2-course-128-powers-20150830-1440.mbz
6.1G .//backup-moodle2-course-242-pre-ap_wg-20150830-1628.mbz
9.4G .//backup-moodle2-course-148-sp1b-20150830-1454.mbz
And that was back just before the start of this academic year. The last 2 probably had not been re-set at the time of the command line backup run.
The last two courses have to be backed up via command line as the OS has an issue with *copying* files over 4Gig from one location to another. Must use 'mv' instead. Known issue with this OS.
Restores of such courses have to be made from file system repo. Courses are uploaded to a file system repo via scp.
'spirit of sharing', Ken