----- Original Message -----
From: Lyvim Xaphir <[EMAIL PROTECTED]>
Date: 08 Jan 2003 07:16:44 -0500
To: NewbieMandrake-List <[EMAIL PROTECTED]>
Subject: Re: [newbie] IBM Deskstars in Mandrake 9.0 server> On Tue, 2003-01-07 at 10:52, Tom Brinkman wrote: > > On Monday January 6 2003 08:00 pm, Andrew Miller wrote: > > > I built a server recently for web server, email server, file server > > > and other uses and am running Mandrake 9.0 on it. I used a pair > > > of 100 GB IBM Deskstars (120GXP's I believe). IBM is having > > > problems with these drives failing and now recommends only using > > > them 330 hours a month, something less than 50% of the time (see > > > http://www.sheller.com/ibmpress.htm). My question is whether my > > > use of these drives in a server application is something I should > > > avoid? Also, is there a setting for power savings that would sleep > > > the drive when it is not getting any hits (most of the time). > > > Looks l could add a decent SCSI drive that is meant for always-on > > > use. Your feedback is welcome. > > > > There's two schools on this, I side with those that believe > > spinning the drives down is a bad idea. Sort'a like a lightbulb, > > they last longer if you're not always turnin 'em off and on ;) > > -- > > Tom Brinkman Corpus Christi, Texas >****************** >Lyvim Xaphir wrote: > I'm in the school that turns stuff off. I'm very uncomfortable with the > idea of comparing a hard drive with a short circuit. I'm more amiable > to thinking of a hard drive as having "miles", like a car; which is a > much closer anology. It's closer because of bearing surfaces; the > number of rotations that the bearings have is finite, just as the > number of rotations that your car crankshaft has is finite. You don't > want to leave your car running all the time just to keep it operational. > > Most of the time a drive fails not from it's controller electronics, but > rather from sealed bearing failure. I know a fellow in the data > recovery business, and he is constantly getting old drives spinning long > enough to extract the data. He does not spend a comparatively long time > replacing drive electronics. > > Yes the temperature differentials have an impact, but only in those > cases that don't have good enough ventilation. Also the impact of > temperature differentials is directly proportional to the scope or > variation bandwidth of those temperature differentials. In a light bulb > scenario you are talking about probably the most extreme variance > possible in an appliance, since it goes from room temperature to several > hundred degrees in a fraction of a second within power-on. In a direct > current solid state device, such as a hard drive, this is far from the > case, and even less so with adequate airflow. > > I've been involved with hardware since the late 80's, and I still have > hard drives operational from that time. They are not powered on 24/7. > > Just my wooden nickel... > > --LX >******************************************************* Wow Lyvim, do I ever agree wholeheartedly! I have never been comfortable with the idea of leaving something on when it isn't in use. Not a light bulb, not anything really. I don't know a lot about electronics, but I have been interested in things mechanical all my life. A hard drive has major mechanical components, and those type of components wear with use. Auto engines suffer from a wear factor upon startup that is more severe than normal, mainly due to lack of lubrication until the oil pump is able to supply the required oil under pressure to the bearing surfaces. HD's don't have that type of startup considerations. I shut my comp down when I'm not using it. It makes me feel better to do that, it just seems the environmentally "friendlier" thing to do. Of course, that's just IMHO. I know there are those who make a valid case of "on 24/7" too. To each his/her own. All the best! --Angus "Let us not look back in anger or forward in fear, but around in awareness."--James Thurber *********************************************** *Reg. Linux User #278931* *********************************************** *Power by Mandrake Linux 9.0* *********************************************** -- _______________________________________________ Get your free email from http://mymail.operamail.com Powered by Outblaze
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