lacasse@blaise.rand.org (Mark LaCasse) (11/07/88)
when moving a hard disk by car, is it best to carry it 'lying down'
or 'standing up'. the former may cause the heads to chatter against
the platter at the landing zone. the latter would encourage the
heads to swing off the landing zone, or as much as they can move.
if it matters, it is a 5.25 inch, 300 mb priam.
Mark LaCasse qantel!hplabs!sdcrdcf!randvax!lacasse
c/o The Rand Corporation cbosgd!ihnp4!sdcrdcf!randvax!lacasse
1700 Main Street decvax!randvax!lacasse
Santa Monica, CA 90406
213/393-0411 ext. 7420 lacasse@Rand-Unixjohn@wa3wbu.UUCP (John Gayman) (11/08/88)
In article <1777@randvax.UUCP>, lacasse@blaise.rand.org (Mark LaCasse) writes: > when moving a hard disk by car, is it best to carry it 'lying down' > or 'standing up'. the former may cause the heads to chatter against > the platter at the landing zone. the latter would encourage the > heads to swing off the landing zone, or as much as they can move. > if it matters, it is a 5.25 inch, 300 mb priam. > If you hav a choice, it is usually best to have them on edge. But given that transportation by auto usually involves sitting the computer on the seat or something, the chances for vibration that would result in head chatter is slim. Also, it is best transported in its shipping carton if you have a choice. I would assume that your 300MB Priam is of the voice- coil positioning variety and if so is probably self-parking. This means that at power off you may hear a slight "clunk" as the heads position them- selves on the inner-most track and *lock* there. At power up a selenoid is energized to release the heads and allow them to return to track zero (or whereever else they want to go). For these types of drives your main enemy would be head "bounce" which can be prevented by either having the drives on their edge or if transported horizontal, use the original packing. John -- John Gayman, WA3WBU | UUCP: uunet!wa3wbu!john 1869 Valley Rd. | ARPA: john@wa3wbu.uu.net Marysville, PA 17053 | Packet: WA3WBU @ AK3P