Hardisk Configuration in Proliant ML350 G2server

Hi,
I have an old CompaqML350 proliant (G2 server) of PIII,1.4GHZCPU,2GB RAM which has 3 no's of 36.4gb ultra3 scsi configured with raid5 with the logical drive space of 70gb Approx.
I am planning to use this machine as Backup server with the following.
1.Install External Tape Drive
2.Install symantec veritas backup exec Software.
3.Keep Users shared Folders Approx 40 user folders of 1GB allocation for each user.
I am planning to keep the existing raid5 for Operating system(Win2003serverOS),Backup software and Other Software's.
and Planning to add 2no's of 146gb hard drives and configure with mirroring for users shared folders to utilize the 146gb logical drive space.
Kindly suggest to go as per the plan or provide me with best recommended method.
Please note,currently this is a spare server with no data,hence i can do any hardware or software changes as per the requirement.
Regards GiriPrasad.S.

sgiriAsked:
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andyalderCommented:
Not sure what you want info on, setting up a new mirror you just plug the disks in, go into the array configuration utility under HP (or compaq) system tools and make a new array and then make a new logical disk on it, then go into Windows and format it.
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patilsudarshanCommented:
You should add one more 36gb hard disk for RAID 5 recover process. because with 3 disks you can able to create RAID 5 but if one disk fail you won't recover the data from RAID 5 volume. so please go through following suggestion if you feel work in your environment

1) Add one more disk for RAID 5 configuration or create RAID 0 with two disks for OS and backup exec software
2) You have backup software then don't create mirror volume for user data you can create simple volume with 146 + 146 GB so you get 292 gb disk space and also you can increase the user quota. that means users are happy.
3) Configure weekly full and daily differential or increment backup job for user data.
4) If you have more disk space then you that disk space for vaulting data that means first take backup on disk and then move into tape drive.
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sgiriAuthor Commented:
Dear Patilsudarshan,Thanks for reading and understanding my question and for your advice.
I am not clear about your 4th point,Please explain it clearly.Regards GiriPrasad.S.
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patilsudarshanCommented:
Usually tape devices are slow compare to disk backup.
So you can mention primary storage is disk storage and secondary is Tape device.
If you go through backup exec user guide they mentioned how to create backup job policy in this envirnment.
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sgiriAuthor Commented:
I got clear Idea after reading your suggestions.thanks for the prompt response.
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andyalderCommented:
RAID 0 for user data? I sincerely hope you're not running a business on this.
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sgiriAuthor Commented:
Dear andyalder,If raid 0 is not a recomended solution,Please suggest for the recomended solution.Regards GiriPrasad.S.
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andyalderCommented:
Well, if one of the disks fails in RAID 0 the whole thing stops, RAID 0 is fine for workstations and home use because reliability doesn't matter, only one user gets affected. For production in a business environment you really need some redundancy, either RAID 1 or RAID 5 assuming you don't want to be down for a day or so if a disk fails.
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patilsudarshanCommented:
Why I gave RAID 0 solution because of
1) he has backup server
2) He has one two disk (size is 146 each)
3) He wants to share that volume to user data (With RAID 0 he will get good speed)

If he wants to one more 146gb disk then RAID 5 is good solution
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andyalderCommented:
You're probably right, if one of the disks goes down and the system dies it'll be one less phone call to field because he won't be able to log a fault call.
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