PUBLIC MARKS with tag raid

Association et équipe de raid

A l"heure où les serveurs d"entreprises doivent stocker un volume croissant de données et assurer une haute disponibilité, il est nécessaire d"imaginer des systèmes de mirroring (miroir) autres que simplement sur des disques durs. La redondance de disques durs (RAID-1, RAID-5) permet déjà d"avoir une bonne résistance aux pannes d"un disque (ou plusieurs si on est en RAID-5). Cependant, si c"est la machine qui tombe (le processeur, l"alimentation, le contrôleur de disque,...), on n"a aucun moyen pour relancer le tout rapidement sans perte de données. Ayant été confronté à cette problématique, j"ai envisagé une solution de RAID-1 au travers du réseau. C"est-à-dire que sur deux serveurs, on a deux partitions (une par serveur) qui sont à tout moment une copie exacte l"une de l"autre. C"est un mirroring (miroir) de partitions à travers une interface réseau.

Interesting way to monitor Raid 5 of PE 2650 running under debian using the dell afacli tool.

DRBD is a block device which is designed to build high availability clusters. This is done by mirroring a whole block device via (a dedicated) network. You could see it as a network raid-1

This section is about life with a software RAID system, that's communicating with the arrays and tinkertoying them. Note that when it comes to md devices manipulation, you should always remember that you are working with entire filesystems. So, although t

Redhat Enterprise 3 doesn't contain a good guide on how to install and manage a RHEL3 system to a pair of mirrored disks using software RAID. Here's is my guide. This guide should work equally well for the clones of RHEL, e.g. Whitebox linux, CentOS, Tao

The first thing that everyone needs to understand is that many of the new SATA RAID motherboards do not have real hardware RAID, but instead contain a software RAID. The hardware manufacturer provides a software driver to have Windows recognize this a RAI

As hard disk space is ever increasing, you may get replacement drives that are significantly larger than the original devices that they replace, so this tip will show how to increase the size of a RAID array using larger partitions to replace smaller partitions in the original RAID array.

Blizzard’s official site has new info on the Tier 3 Raid Sets.