[DRBD-user] configuring 2 services on 2 hosts

Timo Schoeler timo.schoeler at riscworks.net
Thu Jan 6 15:09:29 CET 2011

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

thus Digimer spake:
> On 01/06/2011 03:27 AM, Felix Frank wrote:
>>> In any case, be sure to have (at least) RAID 1 on each node backing the
>>> DRBD devices to help minimize downtime. Drives fail fairly frequently...
>>> software RAID 1 is an inexpensive route to much better uptime. :)
>> If the budget isn't severely restricted, I'd also throw in an actual
>> RAID controller, software RAID being an unnecessary pain.
>>
>> Cheers,
>> Felix
> 
> If I may provide a counter-point arguing in favour of software RAID;
> 
> With hardware RAID, you array and your data is bound to that controller.
> Should the controller fail at some point, you will find yourself
> scrambling trying to find a compatible controller, and you will be down
> until you do (shy of falling back to recovering from backup). I had this
> happen to me enough that I now won't use hardware RAID unless it's for
> performance (or similar) reasons the make software RAID unfeasible.
> 
> With software RAID, you have a familiar set of tools (mdadm) that many
> people can help you with. More importantly though, you can move your
> array to almost any other machine and get it up and running again with
> relatively little effort, potentially dramatically reducing your mean
> time to recovery.

I may add that in most cases management as well as performance
monitoring of a software will run like a charm compared to most
solutions and tools vendors offer - regardless of what OS you use.

> Cheers!

Best,

Timo
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.5 (GNU/Linux)

iD8DBQFNJc0Zfg746kcGBOwRAtu4AKCoRu5Jm0W33QtEkp/NbJCajC+mYQCeOkxK
ElLKAyKi1syW4qYjYG87PEk=
=lq/h
-----END PGP SIGNATURE-----



More information about the drbd-user mailing list