We have recently acquired a few dual opteron boxes with a fair bit of SATA storage (2 to 4 TB per RAID using 3Ware 9500S-8 or -12 controllers). One immediate unusual "feature" we have found is the slow start up time on the ReiserFS file system at boot up. It typically takes about 3 minutes per file system regardless whether the file system is newly formed, or have a fair bit of usage, at a clean shutdown and reboot or a complete power cycle. If we then changed the file system to JFS, then this slow start up issue goes away. Another trouble however arises with JFS is that disk to disk copy can rapidly drops from 40MB/s to 2 MB/s in about 5 minutes, even with nothing else running on the system. Can anyone shed some light to these issues? The boxes are running Suse 9.1 x86-64 Professional.