Quoted from "Cress"
I wish to add something here IF you are attempting to run a single machine and multiple copies of wow your lag will moslty come from hard drive load times specially in cities
i would suggest adding at least 5 hard drives to the machine for a lot better performance 2 raids <stripe> for better performance if just to run 4 wow clients on,
and a single drive for operating system and 1 wow client
as most of you will notice that when your lagging bad your hard drive will be running off the planet.
hope this helps
5 drives is the old-school way of doing things. You don't need multiple drives, although it's always nice to have the OS/swap file on a different fast drive than your apps. Sym-links will fix this problem, and it's already been discussed a bunch on this site. This way, you reference the same data files from your various WoW installs. It's better to have the drive be fast in access time and transfer rate (which the 300GB Velociraptors do better than just about anything else) than to use 5x slower drives. The lag is caused from WoW having to fetch every object and texture in cities - think about the city detail, NPCs, and all the different gear players are wearing. Fast access times (10k rpm drives) help fetch that object/texture with minimal delay, and fast transfer rates (RAID0, SATA 3.0Gb/s) help load that texture quickly. Since the textures aren't very large - they're just extremely numerous, I'd put my money into faster access than transfer rates, which is why I'd suggest *1* 300GB Velociraptor or 150GB Raptor over a group of 7200 rpm drives.
Think of it this way when multiboxing hard drives and landing in Shatt:
WoW1 - find and load WoW1 drive1/folder data files.
WoW2 - find and load WoW2 drive2/folder data files.
WoW3 - find and load WoW3 drive3/folder data files.
WoW4 - find and load WoW4 drive4/folder data files.
WoW5 - find and load WoW5 drive5/folder data files.
OR:
WoW1 - find and load WoW1 drive/folder data files.
WoW2 - reference WoW1 drive/folder data files that are already cached.
WoW3 - reference WoW1 drive/folder data files that are already cached.
WoW4 - reference WoW1 drive/folder data files that are already cached.
WoW5 - reference WoW1 drive/folder data files that are already cached.
It's no comparison - symlinks are MUCH faster than separate drives. The only time I'd recommend 5 separate drives is if you're 5-boxing on 5 separate PCs. Otherwise, it's a waste of money/power/heat.
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