[mythtv-users] Network Drive Storage Questions and others.
kuphal at dls.net
Tue Sep 19 21:36:54 UTC 2006
Douglas Wagner wrote:
> Ok, so i'm REALLY starting to look into this and quickly. Couple more
> questions for all of you:
> Debating between going hardware raid 5 and just a bunch of non raid disks.
> I'll start with the questions:
> 1) Can you convert from Raid 1 (Mirroring) to Raid 5 without
> loosing/moving the data?
Yes, by copying between RAID sets, but not as an in-place upgrade.
> 2) Can you add disks to a Raid 5 without having to move data off the
> Raid/Reconfigure the Raid (i.e. can you add the disk in place)
Yes, in newer versions of the raid tools but all the drives/partitions
must be of equal size
> 5) For HDTV, should I be looking at Gigbit Ethernet to appropriately
> stream data over the network or can I get away with 100BT?
I'm doing it with 100BT, even 100BT to switch 1 and that connected to
switch 2 where my other computers are. No problem with HD playback. I
did have some trouble recording to HD across one of my switches ala
network storage but I think that was my switch more than the speed.
> Here's the thing, at this point i'm looking at one or two drives but
> being expandable in the future. I'd like to go with a pair of 250g
> now (potentially Mirrored) and add to that in the future to build up a
> raid 5...depending whether the wife feels like the data on the PVR is
> too good to replace or not.
I've gone back and forth on that myself and I've settled with no RAID
and simply use LVM to expand the disk storage as I add newer differing
sized drives. Nothing I have is critical enough that I couldn't lose it
and anything I feel is somewhat important (DVD rips which would take
alot of time to re-rip), I simply burn the files to dual layer DVD as
data and keep the copies. I don't find the investment and headache in
RAID to be worth it for the data I'm looking to protect.
> Obviously if the verdict is "Na, we can loose it" then i'll look at a
> non-raid solution since frankly raid 5 is just expensive and Mirroring
> is just stupid when you're talking about adding more disks in the
> future (have to add in pairs). Otherwise I need some kind of
> extendable solution...the epotomy of which would be starting with 2
> drives now and adding a drive at a time in the future.
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