1. maspero was asking "想买个120G的硬盘，有没有推荐的？”，therefore savvio's 37GB or 74GB available capacities are certainly out
2. i don't care what you did to spin a 5400rpm disk to 10000rpm and whatever accoustic result you got from it. i've been doing my IA in seagate and physically used all kind of SCSI disks. "10000rpm+ SCSI harddisks sound like 电锯" is both from my own experience and from the engineers who actually designed it. SCSI harddisks are mainly for servers which resides in a server room, whether they sound like a whisper or 电锯 is not a concern.
3. i am not saying 2.5' disks are not good. what i meant was spending tens of times of money on SCSI 2.5' harddisks than ordinary IDE 3.5' harddisks are of no point for a desktop system. by the way, your missed out one important point, smaller disk means less seek time but at the same time, in order to increase the relatively lower transfer rate (as compared to normal 3.5' design), the rpm must increase, which leads to more serious reliability problem. the real advantage of 2.5' disks is they generate less heat.
4. from maspero's point of view, i am sure that he wants more realistic answers than yours. almost everybody knows an $2000 RAID 5 with SCSI harddisks gives maximum performance and reliability. but have you ever considered getting such a set for your own desktop in your bedroom? expert?
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