From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Majed B." Subject: Re: md software raid Date: Wed, 28 Oct 2009 05:26:18 +0300 Message-ID: <70ed7c3e0910271926g5f72fa50sfa874bb0bf9f3d78@mail.gmail.com> References: <70ed7c3e0910271810t368f3081g3db4411ab073b531@mail.gmail.com> <20091028021139012.SPRI6016@cdptpa-omta03.mail.rr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <20091028021139012.SPRI6016@cdptpa-omta03.mail.rr.com> Sender: linux-raid-owner@vger.kernel.org To: Leslie Rhorer Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Leslie, Backup is never cheap. Unless you print the data in 0 & 1 on paper in font size 8 or 6....or maybe a reduced form of it... heh. On Wed, Oct 28, 2009 at 5:11 AM, Leslie Rhorer wr= ote: > > =C2=A0 =C2=A0 =C2=A0 =C2=A0I hear what you are saying, but reformatti= ng an array to a new fs is > definitely a daunting prospect. =C2=A0I have a minor coronary every t= ime I think > of deliberately reducing the number of copies of my data from 2 to 1 = while > the array is re-formatted and the data copied back to the main array.= =C2=A0This > process takes long enough that the odds of encountering two drive fai= lures > on the RAID5 backup system during the copy are not infinitesimal... > > =C2=A0 =C2=A0 =C2=A0 =C2=A0 > > =C2=A0 =C2=A0 =C2=A0 =C2=A0I guess one of these days I am going to ha= ve to bite the bullet and > build a *SECOND* backup system. =C2=A0I don't suppose I will ever bre= athe > perfectly easy until I can have two completely independent systems fa= il and > still not lose any data. =C2=A0That, or maybe Blu-ray disks will beco= me cheap > enough to create multi-terabyte backups on them. =C2=A0Right now, the= best price > I see is $112 a terabyte, and I can do substantially better than that= using > hard drives. =C2=A0Even if they do get cheaper than hard drives, the = thought of > swapping out 400+ Blu-Ray discs over a period of several days doesn't= really > thrill me. =C2=A0Maybe a cold hard drive backup is the answer? =C2=A0= It eliminates > most of the pitfalls of a Blu-Ray backup, can easily be overwritten, = only > requires a relative handful of discs, and costs less than $75 a terab= yte. > > =C2=A0 =C2=A0 =C2=A0 =C2=A0Hmmm... > > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =C2=A0http://vger.kernel.org/majordomo-info.ht= ml -- =C2=A0 =C2=A0 =C2=A0 Majed B. -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html