Date: Fri, 12 Nov 1999 12:39:30 -0600 From: David.Costa@tellabs.com To: freebsd-questions@FreeBSD.ORG, root@blane.interland.net Subject: RE: sync question Message-ID: <H0000e7502e59661.0942431968.mail.hq.tellabs.com@MHS>
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--openmail-part-086203ed-00000002 Content-Type: text/plain; charset=ISO-8859-1 Content-Disposition: inline; filename="BDY.RTF" ;Creation-Date="Fri, 12 Nov 1999 12:39:29 -0600" Content-Transfer-Encoding: 8bit Well, I doubt if sync parks the drive heads, as this happens automatically in all modern hard drives. In all modern drives based on voice coil technology, the heads are parked by virtue of removing power. This covers both IDE and SCSI drives. I haven't seen a drive based on stepper motor technology in ten years. These drives required a program to move the heads to a "parked" position. If the system is packed adequately, I wouldn't be concerned about shipping damage to the hard drive. Dave Costa -----Original Message----- From: root@blane.interland.net [mailto:root@blane.interland.net] Sent: Friday, November 12, 1999 12:38 PM To: freebsd-questions@FreeBSD.ORG Subject: FW: sync question Hello, First post here. I have a need to move 15 freebsd server over 1000 miles in a very short period of time. Ie: 8 hours. We are going to charter a plane to accomplish this. I do not want to pull the harddrives out of the server if at all possible. So my question is this: Does sync(2) called by shutdown(8) or halt(8) park the heads of the drive? I need to know if I should take the drives out or will they be safe enough in the server if the server packed good will survive the trip. My thinking is if the heads are parked then no harm no foul. Thanks in advance. Andrew Hall To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message --openmail-part-086203ed-00000002 Content-Type: application/rtf Content-Disposition: attachment; filename="BDY.RTF" ;Creation-Date="Fri, 12 Nov 1999 12:39:29 -0600" Content-Transfer-Encoding: base64 e1xydGYxXGFuc2lcYW5zaWNwZzEyNTJcZnJvbXRleHQgXGRlZmYwe1xmb250dGJsDQp7XGYw XGZzd2lzcyBBcmlhbDt9DQp7XGYxXGZtb2Rlcm4gQ291cmllciBOZXc7fQ0Ke1xmMlxmbmls XGZjaGFyc2V0MiBTeW1ib2w7fQ0Ke1xmM1xmbW9kZXJuXGZjaGFyc2V0MCBDb3VyaWVyIE5l dzt9fQ0Ke1xjb2xvcnRibFxyZWQwXGdyZWVuMFxibHVlMDtccmVkMFxncmVlbjBcYmx1ZTI1 NTt9DQpcdWMxXHBhcmRccGxhaW5cZGVmdGFiMzYwIFxmMFxmczIwXGNmMCBXZWxsLCBJIGRv dWJ0IGlmIHN5bmMgcGFya3MgdGhlIGRyaXZlIGhlYWRzLCBhcyB0aGlzIGhhcHBlbnMgYXV0 b21hdGljYWxseSBpbiBhbGwgbW9kZXJuIGhhcmQgZHJpdmVzLlxwYXINClxwYXINCkluIGFs bCBtb2Rlcm4gZHJpdmVzIGJhc2VkIG9uIHZvaWNlIGNvaWwgdGVjaG5vbG9neSwgdGhlIGhl YWRzIGFyZSBwYXJrZWQgYnkgdmlydHVlIG9mIHJlbW92aW5nIHBvd2VyLiBUaGlzIGNvdmVy cyBib3RoIElERSBhbmQgU0NTSSBkcml2ZXMuIEkgaGF2ZW4ndCBzZWVuIGEgZHJpdmUgYmFz ZWQgb24gc3RlcHBlciBtb3RvciB0ZWNobm9sb2d5IGluIHRlbiB5ZWFycy4gVGhlc2UgZHJp dmVzIHJlcXVpcmVkIGEgcHJvZ3JhbSB0byBtb3ZlIHRoZSBoZWFkcyB0byBhICJwYXJrZWQi IHBvc2l0aW9uLlxwYXINClxwYXINCklmIHRoZSBzeXN0ZW0gaXMgcGFja2VkIGFkZXF1YXRl bHksIEkgd291bGRuJ3QgYmUgY29uY2VybmVkIGFib3V0IHNoaXBwaW5nIGRhbWFnZSB0byB0 aGUgaGFyZCBkcml2ZS5ccGFyDQpccGFyDQpEYXZlIENvc3RhXHBhcg0KXHBhcg0KLS0tLS1P cmlnaW5hbCBNZXNzYWdlLS0tLS1ccGFyDQpGcm9tOiByb290QGJsYW5lLmludGVybGFuZC5u ZXQgW21haWx0bzpyb290QGJsYW5lLmludGVybGFuZC5uZXRdXHBhcg0KU2VudDogRnJpZGF5 LCBOb3ZlbWJlciAxMiwgMTk5OSAxMjozOCBQTVxwYXINClRvOiBmcmVlYnNkLXF1ZXN0aW9u c0BGcmVlQlNELk9SR1xwYXINClN1YmplY3Q6IEZXOiBzeW5jIHF1ZXN0aW9uXHBhcg0KXHBh cg0KXHBhcg0KSGVsbG8sXHBhcg0KXHBhcg0KRmlyc3QgcG9zdCBoZXJlLiAgSSBoYXZlIGEg bmVlZCB0byBtb3ZlIDE1IGZyZWVic2Qgc2VydmVyIG92ZXIgMTAwMCBtaWxlc1xwYXINCmlu IGEgdmVyeSBzaG9ydCBwZXJpb2Qgb2YgdGltZS4gIEllOiAgOCBob3Vycy4gIFdlIGFyZSBn b2luZyB0byBjaGFydGVyIGFccGFyDQpwbGFuZSB0byBhY2NvbXBsaXNoIHRoaXMuICBJIGRv IG5vdCB3YW50IHRvIHB1bGwgdGhlIGhhcmRkcml2ZXMgb3V0IG9mIHRoZVxwYXINCnNlcnZl ciBpZiBhdCBhbGwgcG9zc2libGUuICBTbyBteSBxdWVzdGlvbiBpcyB0aGlzOiAgRG9lcyBz eW5jKDIpIGNhbGxlZFxwYXINCmJ5IHNodXRkb3duKDgpIG9yIGhhbHQoOCkgcGFyayB0aGUg aGVhZHMgb2YgdGhlIGRyaXZlPyAgSSBuZWVkIHRvIGtub3cgaWZccGFyDQpJIHNob3VsZCB0 YWtlIHRoZSBkcml2ZXMgb3V0IG9yIHdpbGwgdGhleSBiZSBzYWZlIGVub3VnaCBpbiB0aGUg c2VydmVyIGlmXHBhcg0KdGhlIHNlcnZlciBwYWNrZWQgZ29vZCB3aWxsIHN1cnZpdmUgdGhl IHRyaXAuICBNeSB0aGlua2luZyBpcyBpZiB0aGUgaGVhZHNccGFyDQphcmUgcGFya2VkIHRo ZW4gbm8gaGFybSBubyBmb3VsLiAgVGhhbmtzIGluIGFkdmFuY2UuXHBhcg0KXHBhcg0KXHBh cg0KQW5kcmV3IEhhbGxccGFyDQpccGFyDQpccGFyDQpccGFyDQpUbyBVbnN1YnNjcmliZTog c2VuZCBtYWlsIHRvIG1ham9yZG9tb0BGcmVlQlNELm9yZ1xwYXINCndpdGggInVuc3Vic2Ny aWJlIGZyZWVic2QtcXVlc3Rpb25zIiBpbiB0aGUgYm9keSBvZiB0aGUgbWVzc2FnZVxwYXIN Cn0= --openmail-part-086203ed-00000002-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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