PCI64 SCSI Controller + SCSI HDD on Pentium I?

Question

Iron

Continuing the topic "PCI-SATA controller for the first Pentium" . An alternative way to increase the performance of the Pentium I disk subsystem by installing SCSI Controller Tekram DC-390U3W PCI 64  and  IBM Ultrastar 36LZX DDYS-T09170 9.1Gb .
There were no problems with the jumpers on the controller board: there are only three jumpers - the first one indicates which port the SCSI devices are connected to, the second one specifies the bus frequency 66/33 and the third one sets the bus width 64/32 (for compatibility with PCI 2.1 - PCI 2.3). The controller has a built-in BIOS that allows you to adjust the speed of the hard drive. I thought that there would be no special connection questions, but after reading articles like Mastering the SCSI interfacequestions remain. Finally, having carefully read the manual from IBM attention pdf 250Kb , I proceeded to install the disk.
The computer did not boot with the NT installed on the disk, however, SST 4.45 saw it and tested it, although the result of the HDD from the IDE turned out to be somewhat worse than that of the previously tested Seagate, apparently, the speed is affected by a difference of about four years in age between the release of devices on sale. As a control check of the system, it was decided to install Windows XP SP3, everything was installed like clockwork. However, it is worth noting the increased noise level of SCSI HDDs compared to PATA/SATA devices, which can only be compared with the crazy Creativ Infra 48 CD drive from the past.
Questions about setting up a SCSI HDD: Question one
, allow Windows to cache the disk? For IDE and SATA, I would enable this parameter without hesitation, but here it is alarming.

Question two , what to do with these parameters in the "SCSI Properties" tab?

The third question is whether forced cooling is needed for this disk, because during the installation and operation of the OS about 45 minutes. the microcircuits and the HDD case itself heat up.
Question four , how to reduce the noise level of the disk, given that there is a warning “DO NOT COVER THIS HOLE” on top of it.

Answer 1

1. As in the case with *ATA screws, caching gives a performance boost. Whether or not to enable screws for *ATA/SCSI already depends on the type of load and the purpose of the screw and the system as a whole, but it will not be superfluous to connect the UPS in any case :)
2. Do nothing, disabling these options will only worsen performance
3. Forced cooling won't hurt much
4. Given that this is a server drive, it was not designed with silence in mind :) The rotation speed of SCSI is two to three times higher than that of SATA / IDE, so the noise (and performance) is correspondingly higher. Try to put it on screws with rubber washers or any case/pocket that dampens vibrations and does not transfer them to the system unit case. Just keep in mind the cooling. (“DO NOT COVER” means that this hole cannot be sealed or tightly closed - it serves to equalize the pressure inside the case and outside, you can put screws in outer cases / pockets, since they are also not sealed)
PS. you can read about the first / second question in Microsoft Support: Description of Advanced Disk Properties Features