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By stonebridge ·
My database Server has two 9GB hard drives that are mirrored. The drives are almost full so I added two 18GB hard drives. My problem is how do I prepare these new drives to work with the old drives and be fault tolerant without loosing any data or the drives. I know mirroring is out of the question. Help!

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by zchris In reply to Storage

do you have a raid-adapter or are you using windisk from winNT?

1. add the drives to the system
(if you have a raid-system you have to create a logical drive on them)
2. run windisk
3. mark the 2 old and the 2 empty partitions (with ctrl)4. "Alt" - "p" - "v" (create volume set)
5. reboot

that's it. you'll still have all of your data and a 27 GB partition.

good luck

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by stonebridge In reply to Storage

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by curlergirl In reply to Storage

There are two basic choices: 1) You can mirror the two 18GB drives (create a partition on one and then mirror it to the other), and then move files to these new drives. If you do this carefully and recreate your shares and permissions exactly the same, you users should not have any problem connecting to their data. 2) You could break your original mirror and create a new RAID5 array (striping with parity). The best way to do option 2 is to get a hardware RAID controller from Adaptec or othervendor of your choice. Also, I believe option 2 would require you to do a backup and restore of the original hard drive - I don't think you can create a RAID array from a single drive that already has data on it, but you could check this out first before deciding. General wisdom holds that mirroring is a bit faster, but you get more bang for your buck (more MB per hard drive available) with RAID5 and also less down time if a single drive fails in the RAID5 array. For example, with mirroring,you end up with 24GB available, while with RAID5, you'd end up with more like 46 or 48GB available storage. Hope this helps!

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by stonebridge In reply to Storage

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