On Apr 6, 2005 11:50 AM, David <[EMAIL PROTECTED]> wrote: > Milan Andric wrote: > > >Hello, > > > >I'm planning on sqeezing as much as I can into a microATX case > >to make my mythtv frontend/backend. I also want to make this > >a media storage box/file server, ie. include a RAID 5 LVM storage setup. > > > > > It'll be noisy and, more worryingly - very hot!
Yeah I'm obviously worried about that, figured there's only one way to find out ... there's probably no way around the noise ... for now until i can make a backend in a basement or somewhere. right now i have an apt. i'm beginning to think i'll need to stick the fileserver in a tower/desktop case. what type of case do you suggest as a minimum for raid 5, + OS drive? ie. 3-5 drives. so minimally, i'd create the raid 5 and os paritions on 3 drives with missing trick for expansion. 1 SATA 300G sda1 - 250G (raid 5 - 1) sda2 - 50G (raid1 - 1) 1 SATA 300G sda1 - 250G (raid 5 - 2) sda2 - 50G (raid1 - 2) 1 ATA 250G (this i might add in the future. an identical drive is ideal but ...) hda1 - 250G (raid 5 - 3) if i change my route from microATX behemoth I'd likely make my current desktop computer a file-server/myth backend and purchase HW for a frontend. there's a problem with that. 1) no wired network to bedroom, just wireless 802.11B 5-8Mb/s? but it does cost about the same since i'll just stick those drives and SATA card into my desktop. a diskless frontend would be best and probably cheaper. i wonder what a diskless frontend goes for these days? i was thinking a mediaMVP might do the trick ... http://www.hauppauge.com/html/mediamvp_datasheet.htm but for watching mpeg4 video? n the past i usually schedule my mpeg2 files to be compressed. figure there's got to be something else out there. > > >I'm basically stuck on the RAID. Since I do not have enough data > >*right now* to use the 3 x 300G RAID 5, I'd like to just buy two > >drives now and use mdadmin to > >setup a RAID 5 with 2 missing drives and add drives as time goes on. > > > > > nope - can't do that :) > You can start with a 3-drive raid5 with 1 missing (ie 2x300Gb) and add a > 3rd later. > > But you'll have no redundancy until you buy the 3rd drive. > You also can't 'add drives as time goes by' to a raid 5. unless i use the 'missing' trick? > You could buy another 3 drives and setup another 3drive raid5 and add it > to your lvm but that's not what you meant. > > [you could also investigate EVMS - it does allow you to 'grow' raid5 - > but it can fail and backups are strongly suggested...] > > >I know it's required to have 3 drives to make a RAID 5 array. But is > >there a way to fake so I can add a third drive later? Or do I just > >have to fork up the cash now? > > > > > so yes you can use the 'missing' keyword to fake the 3rd drive. > > >If you could post your partition scheme or how you setup > >your partitions/drives it would help me. > > > > > see the wiki - I wrote a step-by-step there... > http://www.mythtv.info/moin.cgi/AdministrationSoftware_2fLvmRaid > > >Has anyone tried to mix/match devices like ATA and SATA to create a raid 5 > >with > >md? I know it's crazy but i'm just trying to consider the options for > >the time being. > > > > > yes. > I have 6x250 Gb sata drives making a raid5 array > The 6th 'spare' drive is a 250Gb partition on a 300Gb PATA drive - and I > have had it as part of the array with no issues at all. dang. what case do you use? and powersupply/fan? > > >Here's some of my proposed hardware setup (still in the works) : > > > > > mostly fine > > >Case: > >Cooler Master ATC-620C-BX1 Cases microATX Form > >http://www.newegg.com/app/viewProductDesc.asp?description=11-119-024&depa=0 > > > > > This'll hurt - search the lkml for issues that eventually trace to poor > PSU or overheat with multiple drives... ok, thanks. -- Milan _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
