Path: csiph.com!x330-a1.tempe.blueboxinc.net!usenet.pasdenom.info!news.albasani.net!.POSTED!not-for-mail From: The Natural Philosopher Newsgroups: comp.os.linux.misc Subject: Re: Data Recovery from Nas Acer NS04 Date: Thu, 14 Apr 2011 15:36:17 +0100 Organization: albasani.net Lines: 41 Message-ID: References: <8bb3e138-de1f-4283-a215-805b75a2aecb@r6g2000vbz.googlegroups.com> <5crcq61ktl6e1ju7s9facuqsj8qlp4lu2g@4ax.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Trace: news.albasani.net NInTNvxU+N7FwjnMEjwRYf4KfSCe3uEppmOcfxGt1st/CXlQU7ClNcYiz7fMiAA3An20a0KPSzXtlp9q+f3D0OxEuhHI3xDxey3ZiiTssD5g7gpEgH0j1Gar/xetX+0F NNTP-Posting-Date: Thu, 14 Apr 2011 14:36:18 +0000 (UTC) Injection-Info: news.albasani.net; logging-data="djPbETlAwEg7sQwUpi0GEwF9dTRXzCxMmyGM0gtuTb+gFYFnpl+xHGmN5b69XJK/KBG7q80I9iZxy9A1SGjlC62SetzwHOTDTEx2pKxFzAx1o0csiJGtoqRa7MpHGKSz"; mail-complaints-to="abuse@albasani.net" User-Agent: Mozilla-Thunderbird 2.0.0.24 (X11/20100329) In-Reply-To: Cancel-Lock: sha1:W3bBRWayRFTARrpZO+MwtrrRaH8= Xref: x330-a1.tempe.blueboxinc.net comp.os.linux.misc:721 JohnF wrote: > Grant wrote: >> davidecool wrote: >> >>> this post is my last chance to recover data from a raid. >> Usual answer is to restore from backup, >> Not helpful when the RAID is your backup though, > > Yeah, most people seem to confuse raid with a backup > solution when it's really an availability solution. > Anything that's powered up and spinning isn't a backup. > I have three one-disk nas's (synology ds109j's) on > my soho lan, each one backing up all four of my pc's > (and a few old digital vaxstations and an alphaserver). > Costs less than one two-disk nas raid. > Usually only one nas is powered up at a time, in rotation, > except for occasional syncs when something looks weird. > If one disk and/or chasis dies, at very most a day's work > dies with it. > Raid just scares me as backup. Especially if the > controller dies, then depending on raid level, it can > be hard to make sense of the disks without an identical > duplicate controller. My disks are all just ext3, easily > mountable on any linux box. In fact, I have a Thermaltake > BlacX duet just for that purpose in case of trouble. > Raid, I think, is just the wrong way to go for most > typical soho-type backup requirements. You might want > a raid on your lan for availability purposes, so everybody > keeps working in case a single spindle dies. But you want > a whole different (most likely non-raid) backup solution, > whether or not you have an online raid for availablity. +100 backup means simplest possible restore solution. Raid ain't that. My backup is just a second disk. Backs up other disks. If they go, new disk and restore, if IT goes, new disk and re-backup. Its all in a cheap as chips low power headless server, running rsync..