On Mon, 17 Oct 2011 18:11:05 -0500 Stan Hoeppner <s...@hardwarefreak.com> wrote:
> On 10/17/2011 5:09 PM, Raf Czlonka wrote: > > On Mon, Oct 17, 2011 at 06:12:00PM BST, Camaleón wrote: > >>> 1. does the HD need to be exactly the same as the one its being paired > >>> with ? > >> > >> Not necessarily, but you will lose the remainder difference space between > >> the smallest and the bigger of the disks. If you were referring to the > >> brand/model/serial number of the disks some people think is better they > >> exactly match (me) others think the opposite. > > > > It's not just size that matters ;^) > > If you'd like your RAID array to perform better it's always better to > > have the disks identical - cache size, speed, etc. If you have drives > > which don't match, essentially your RAID will perform as good as your > > worst drive. > > Also keep in mind that with software RAID you won't be mirroring > "drives" but partitions, since you're looking to mirror your boot/system > drive. Getting your BIOS, boot loader and mdraid setup correctly so > that the surviving drive boots the system after the other fails can be > very very tricky, especially for a Linux RAID novice. > > If this is what you want to accomplish, then you have a lot of reading > and research ahead of you, and likely some trial and error, along with > headaches. > > Given the costs, learning curve, and "ease of use" issues, if I were > you, I'd simply purchase a good cheap real RAID0/1 card and two new > matching 500GB drives. Something like this combo: > > 1 x http://www.newegg.com/Product/Product.aspx?Item=N82E16816116075 > 2 x http://www.newegg.com/Product/Product.aspx?Item=N82E16822136073 > > Setting up a RAID1 set will be pretty easy with this card, and if one > drive fails the card simply boots the other automatically and writes the > failure to a log file and/or sends you an email. No hoops you have to > jump through as with mdraid. And you'll also get a nice little speed > bump due to the 128MB of cache on board. If your system is connected to > a good working UPS you can enable write caching for even better > performance. Total cost of these parts from Newegg is about > $270+shipping. All you need is a free PCIe x1 slot. > > If the cost isn't prohibitive, you'll be much happier with this solution. > Thanks thats VERY informative, I'll check some prices and see whats in the piggy bank, it may involve bribing my wife with a pair of shoes ;) -- Best wishes / 73 Richard Bown e-mail: rich...@g8jvm.com or richard.b...@blueyonder.co.uk nil carborundum a illegitemis ################################################################################## Ham Call G8JVM . OS Debian Wheezy amd64 on a Dual core AMD Athlon 5200, 4 GB RAM Maidenhead QRA: IO82SP38, LAT. 52 39.720' N LONG. 2 28.171 W ( degs mins ) QRV HF + VHF Microwave 23 cms:140W,13 cms:100W,6 cms:10W & 3 cms:5W ################################################################################## -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/20111018083851.6ac97...@debian.g8jvm.com
