[EMAIL PROTECTED] wrote: > I have recently purchased a QNAP TS-409 pro. It's a nice little NAS unit > that accepts up to 4 SATA 3.5-in. drives in hot-swappable trays. It > creates a RAID 5 partition that you can access it with NFS, SSH, etc. The > unit has a very low power consumption and a low cost. > > The NAS unit comes with four empty metal trays that slide into the chassis. > You buy your own HDs. The disks are fastened into the U-shaped metal trays > by four screws. > > One disturbing thing is that the bottom of the U-shaped tray rests directly > against the back of the HD. On my HDs (500 GB Seagates), that side is > occupied by a printed circuit board (PCB), with nice, dense solders. >
Be very paranoid. Many years ago when RS6000 came with 320 meg 3.5" drives I fitted one of the 1st 1 Gig 3.5" drives into the metal mount for a 320 meg drive. I didn't notice the PCB contacting the metal but the owner of the machine did as his case was smoking :-(. Having a drive screw mount slot right next to a PCB with no offset is dumb design. Interestingly there was nothing wrong with the machine or the disk drive. Jim > The disk's PCB has a coat of varnish, but the solder points don't seem > insulated. Yet the metal tray covers this PCB and is flush against it > once the screws are in, with no clearance. > > Out of caution, I cut pieces of paper and taped them on the inside of the > trays to insulate the PCB from the metal (I didn't block any airflow doing > this. > > Is this setup normal? Am I paranoid and should I trust the varnish layer on > the PCB? > > --Fred > _______________________________________________ > Mid-Hudson Valley Linux Users Group http://mhvlug.org > > http://mhvlug.org/cgi-bin/mailman/listinfo/mhvlug > Upcoming Meetings (6pm - 8pm) MHVLS Auditorium > > Jun 4 - Sqeak! and eToys > Jul 2 - KVM (Tenative) > Aug 6 - Zenos > Sep 3 - TBD >
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_______________________________________________ Mid-Hudson Valley Linux Users Group http://mhvlug.org http://mhvlug.org/cgi-bin/mailman/listinfo/mhvlug Upcoming Meetings (6pm - 8pm) MHVLS Auditorium Jun 4 - Sqeak! and eToys Jul 2 - KVM (Tenative) Aug 6 - Zenos Sep 3 - TBD
