Get MCTS Certified Fast Planning and Designing Group Policy to mirror each other
RAID 10, or RAID 1+0, is the first of several ?mixed RAID?modes that are available as high-end storage solutions. In the enterprise, you’ll often run into situations where a simple storage solution utilizing one of the main three RAID types (0, 1, 5) will not be enough, so you’ll need to take advantage of another type of RAID.
The need for RAID 10 most commonly arises when an mcsa organization demands the speed and accessibility of RAID 0 but also desires the reliability that only RAID 1 can bring. In and of itself, RAID 5 can provide some of these features, in that it can both provide redundancy and improve speeds, but on its own RAID 5 cannot completely stripe together several vol- umes and then completely mirror them.
Using RAID 10, an entire stripe is mirrored onto a completely different stripe. What this means is that there are effectively two complete RAIDs, each of which contains mirror-like setups of their disk Configuration. And within these RAIDs, they have been set up to mirror each other?s data. In other words, you’re mirroring an entire RAID, not just a drive.
As mentioned earlier, this is very useful for high-end, demanding environments. But it’s not good for all users. First, RAID 10 is probably the single most expensive implementation of RAID because it requires multiple drives with an exact mirror of the same multiple drives. Thus, you can?t really have RAID 10 without a minimum of four hard drives (two for the stripe and two for the second mirrored stripe). In the real world, you should use this con?gu- ration only when the organization can afford it and when both speed and reliability are absolutely essential.
Within Windows Server 2008, there can be a maximum of 32 logical devices assigned together in RAID 0, 1, or 5 configurations.
OmniCorp has recently acquired a new Windows Server 2008 with more than 70-640 5TB of space spread across 10 hard drives. The server will have several purposes, functioning as a domain controller, a backup server, and a real-time video-editing machine for high-end video software. The requirements for the server are as follows:
The operating system and required ?les must be redundant. The applications must be as fast as possible. The backup software must be fast and provide some redundancy.
In this case, OmniCorp would most likely take the following path:
Create three separate RAID volumes, two in hardware and two in software.
On the first hardware RAID volume, con?gure the operating system to be redundant using RAID 1.
Place the applications folder into a software RAID 0 Configuration, with maximum speed.
Con?gure the remaining backup portions with RAID 5 technology, allowing for some redundancy but also allocating for speeds that are as fast as possible.
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