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Enterprise operating systems compared include Red Hat Enterprise Linux and SuSE UnitedLinux with Windows 2003 thrown in for comparison purposes.
We performed our tests on an HP ProLiant DL580 server with ext3 filing system, a journaled file system that has proven to be more resilient than the 'native' ext2, the traditional Linux default setting, and a RAID 1 (mirrored single drive) configuration. Both UnitedLinux and Red Hat recovered from a simulated drive failure. A simulated CPU failure test proved more difficult, as Red Hat survived but UnitedLinux/SuSE froze. After our testing, SuSE provided settings that it said should prevent this problem.
Network load balancing on the HP ProLiant DL580 also was difficult for SuSE, which took about 10 seconds longer than Red Hat to recover from an ipchained (ipchain is a TCP/IP protocol management method) network card connection termination test.
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