Re: Two RAID1 mirrors are faster than three

Clemens Schwaighofer (cs@tequila.co.jp)
Mon, 12 May 2003 13:35:52 +0900


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

Chuck Ebbert wrote:

> Add the third disk back into the array:
> # raidhotadd /dev/md21 /dev/hde9
> [rebuilt 3000MiB in 313s == (3000+3000)/313 == 19MiB/s throughput]

Why three drives in a Raid1? Raid one is just mirror, or is the third
drive like a "hot" replace drive if one of the others fail?

- --
Clemens Schwaighofer - IT Engineer & System Administration
==========================================================
Tequila Japan, 6-17-2 Ginza Chuo-ku, Tokyo 104-8167, JAPAN
Tel: +81-(0)3-3545-7703 Fax: +81-(0)3-3545-7343
http://www.tequila.jp
==========================================================
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (MingW32)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQE+vySnjBz/yQjBxz8RAi+jAJ96566475BKb8o21/A7Wlzztba1jQCfSCnG
EchYBgaJBdvOPzVbx9rPorU=
=Ydkv
-----END PGP SIGNATURE-----

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/