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To: Spots who wrote (437)	7/19/1998 11:07:00 AM
From: Zeuspaul	Read Replies (4) of 14778

RAID using NT in lieu of RAID Controller Does NT workstation support stripping or is NT server required for all RAID configurations? Ignoring the risks associated with striping for the moment. Do you have any guesses as to performance increases with NT striping? If I were to save a large file would it save significantly faster? Would it call up files faster? Is it possible to stripe three or more drives using NT? Would dual processors..two or three stripped drives and a lot of RAM result in a significantly faster machine wrt to harddrive performance? A post from Anand's BBS anandtech.net >>JahWren Ryel posted 07-19-98 12:22 AM CT (US) Your choices Depends on what operating system you will be running. If you are running Windows NT, there is no need for a special raid controller. You can set it up with 2 disks, partitioned identically, one small partition and one large partition on each. Use the first small partition for your boot and /winnt stuff, use the second small partition for dedicated swap area and stripe the two large partitions. If you get ultra-wide drives and an ultra-wide controller, one channel will be sufficient (ultra-wide = 40MB/s, 1 cheetah ~= 15 MB/, so 2*15=30 leaving ~10MB for overhead) If you want to do raid-5 (you probably don't with only 2 drives) then special hardware is necessary to accelerate the XOR calculations. There is an argument that a special controller with cache is nice, the other side says just add more system ram and let the OS take care of managing your filecache. If you aren't going to run NT (you really should if you are doing demanding work) then a hardware based raid controller may be a better choice because it hides the details of the raid configuration from the OS, to Windows the raid looks like one big disk. One thing to keep in mind is that striping increases your risk due to disk failure. If you have two separate disk drives and you lose one, you still have the data on the second. If they are striped, you lose all the data in the entire stripe. <<

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