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From: Alan McKinnon <alan.mckinnon@gmail.com>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Hard drive storage questions
Date: Tue, 05 May 2015 08:41:13 +0200	[thread overview]
Message-ID: <55486609.9000103@gmail.com> (raw)
In-Reply-To: <CADqA9ub7e1dLVoq+oVUff-twj7B4ws4sOnotyxH3SGBVvY1tcw@mail.gmail.com>

On 04/05/2015 20:42, Nuno Magalhães wrote:
> Greetings gents.
> 
> I may have missed it, but i haven't seen this suggested yet: RAID+LVM.
> If you already have a 3TB drive, buy another (or two more) and build a
> RAID1 or 5 array on them. Then build your LVM on top of /dev/md0 (or
> whatever device your raid is).
> 
> Another approach is ZFS with RAID-Z or similar. I don't know how/if
> ZFS splits data among the drives, but i assume it's wise enough to do
> so in a way similar to a RAID+LVM combo.

That's a good analogy. ZFS spreads it's data out across multiple drives
using an n-drives for data plus m-drives for parity type setup. And the
whole lot forms a storage pool.

The main difference is that ZFS does all it's checksumming in software,
and it's one monolithic system. You can think of it being sort of a
combination of RAID and LVM features, but it's not implemented that way.

> If going RAID, make sure the rpm and cache are the same for
> performance's sake, and you can mix and match drives from different
> vendors (perhaps you should, to add to the redundancy).
> 
> I don't know about btrfs, seems like it's still in a testing-phase so
> i'm not touching it yet.
> 
> Just my 2¢
> 
> Cheers,
> Nuno
> 


-- 
Alan McKinnon
alan.mckinnon@gmail.com



  reply	other threads:[~2015-05-05  6:41 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-04-28  8:39 [gentoo-user] Hard drive storage questions Dale
2015-04-28 14:49 ` Francisco Ares
2015-04-28 15:01 ` Alan McKinnon
2015-04-28 15:24   ` Neil Bothwick
2015-04-28 17:38     ` Rich Freeman
2015-04-28 18:11       ` Neil Bothwick
2015-04-28 18:31         ` Rich Freeman
2015-04-28 18:41           ` Neil Bothwick
2015-04-28 22:02     ` [gentoo-user] " walt
2015-04-29  1:24       ` Rich Freeman
2015-04-29  6:20       ` Alan McKinnon
2015-04-29 14:31         ` Grant Edwards
2015-04-29  6:13     ` [gentoo-user] " Alan McKinnon
2015-04-29  7:52       ` Neil Bothwick
2015-05-04  7:39         ` Dale
2015-05-04  7:46           ` Neil Bothwick
2015-05-04  8:13             ` Mick
2015-05-04  8:26               ` Dale
2015-05-04  8:23             ` Dale
2015-05-04 10:31               ` Neil Bothwick
2015-05-04 10:40                 ` Dale
2015-05-04 11:26                   ` Neil Bothwick
2015-05-09 10:56                     ` Dale
2015-05-09 12:59                       ` Rich Freeman
2015-05-09 14:46                         ` Todd Goodman
2015-05-09 18:16                           ` Rich Freeman
2015-05-04 11:35                 ` Rich Freeman
2015-05-04 18:42                   ` Nuno Magalhães
2015-05-05  6:41                     ` Alan McKinnon [this message]
2015-05-05 10:56                     ` Rich Freeman
2015-05-05 11:33                       ` Neil Bothwick
2015-05-05 12:05                         ` Mick
2015-05-05 12:21                           ` Neil Bothwick
2015-05-05 12:39                             ` Mick
2015-05-05 12:53                             ` Rich Freeman
2015-05-05 21:50                               ` Neil Bothwick
2015-05-05 22:21                                 ` Bill Kenworthy
2015-05-05 22:33                                   ` Bill Kenworthy
2015-05-04 10:57               ` Alan Mackenzie
2015-04-28 15:02 ` Rich Freeman
2015-05-04  7:23 ` Dale
2015-05-05  3:01   ` Walter Dnes
  -- strict thread matches above, loose matches on Subject: below --
2018-11-09  1:16 Dale
2018-11-09  1:31 ` Jack
2018-11-09  1:43   ` Dale
2018-11-09  2:04     ` Andrew Lowe
2018-11-09  2:07     ` Bill Kenworthy
2018-11-09  8:39       ` Neil Bothwick
2018-11-09  2:29 ` Rich Freeman
2018-11-09  8:17   ` Bill Kenworthy
2018-11-09 13:25     ` Rich Freeman
2018-11-09  9:02   ` J. Roeleveld
2018-11-11  0:45   ` Dale
2018-11-11 21:41     ` Wol's lists
2018-11-11 22:17       ` Dale
2018-11-09  9:24 ` Wols Lists
2015-04-27  7:41 Dale
2015-04-28 18:25 ` Daniel Frey
2015-04-28 21:23   ` Dale

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