Date: Sun, 16 May 2010 15:44:06 +0300 From: Kaya Saman <SamanKaya@netscape.net> To: Jeremy Chadwick <freebsd@jdc.parodius.com> Cc: freebsd-fs@freebsd.org Subject: Re: Quick ZFS mirroring question for non-mirrored pool Message-ID: <4BEFE896.6030508@netscape.net> In-Reply-To: <20100516015850.GA55302@icarus.home.lan> References: <4BEF2F9C.7080409@netscape.net> <4BEF3137.4080203@netscape.net> <20100516001351.GA50879@icarus.home.lan> <alpine.GSO.2.01.1005151937300.12887@freddy.simplesystems.org> <4BEF4A73.8060905@netscape.net> <20100516015850.GA55302@icarus.home.lan>
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Thanks for the response Jeremy! Sorry didn't answer right away but as I said in my previous post it was 5am and I ended up crashing out..... [...] > I would highly recommend doing exactly what you've described here. In > fact, it's what I do on two of my home systems (Intel X25-V 40GB drive > used for root, /usr, /var, and /tmp, and ZFS for everything else > including /home), and what I plan on our servers one Intel 80GB SSDs > drop to a more reasonable price. > Cool :-) It's set then this is how I'm gona go. > There are many people here who have gone through the pain (IMHO) of > getting ZFS to boot on FreeBSD, and it still isn't as simple nor > reliable (in all configurations) as it is on OpenSolaris/Solaris 10. > There seem to be a large number of "gotchas" which come up when the > administrator least expects/wants it (usually during a failure > scenario). > Thanks for the warning, I figured that as ZFS doesn't seem as well developed on BSD then Sun Microsystems version (now Sun Oracle just to be up to date!) > Also, please reconsider going with Western Digital RE4 2TB drives. > These drives are all "GP" (Green Power) drives, which you do not want. > There have been numerous reports on the FreeBSD mailing lists about > problems with these drives (repeated head offloading/parking causing > problems in RAID arrays), and yes, it applies to Enterprise class drive > as well; WD has indirectly confirmed the problem in one user's case by > sending him a "fixed" firmware. I can point you to threads if you want > to read them. > > I would recommend you choose WD Caviar Black drives instead (cheaper, > benefit from TLER when enabled, and throughput is much higher than GP > drives), or another vendor of your choice. Don't ask "Who do you > recommend?" because everyone has different experiences/preferences; > there's no vendor who's 99% reliable right now. :-) > > I checked the Caviar Black out and yes it's cheaper which means better for me if it causes less problems and increases reliability; sorry to keep going on about the reliability issue but I just want the drives to ask a long time as I've had so many drive failures over the past few years it gets irritating not to mention expensive replacing drives every few months or years. I found another alternative too which is a Seagate Barracuda 2TB 5900RPM Low Power drive...?? Don't know what you'd make of it though as you explicitly claimed not to use low-power drives? Quote: " Don't ask "Who do you recommend?" because everyone has different experiences/preferences; there's no vendor who's 99% reliable right now. :-) " Isn't this like asking people what their favorite color is?? There are something like 2^23 potentials lol if talking about a 24bit color matrix! Many thanks for all the advice :-D It really is such a pleasure on mailing lists and forums to be helped by such nice and kind people (this includes everyone that has participated in my post!!) P.s. this is deviating a bit from the subject but just caught the UNIX Systems Administrator part in your signature! It's so much where I wana be you have no idea so I'm really envious right now :-) The incredibly funny part however is after searching far and wide I ended up working for a firm developing MS software for companies as a Systems Engineer.... the only catch is that they're having to teach me how to use Windows as I've never actually used it before since XP days about 8 years ago now and since they're using MS Server 2003/8 and Win 7 I am completely lost as I don't really point click too much for stuff any more. Even though my whole home setup is UNIX/Linux based down the switches, wireless AP's and routers which are all Cisco, 3Com or Foundary. .....that reminds me I gota get rid of the 72" Sun rack sitting in my parents living room LOL! Many thanks, Kaya
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