Another RAID one or IDE? There's nothing on my primary IDE channel ATM. IDE
I understood, my brother decided that I needed RAID when I wasn't looking
:-(
A drive is a drive, the same drive can be set up in a RAID array or as
a single drive, whether it be connected to the RAID controller or
another... The consideration here is simply that your current board
only supports PATA, not SATA.
Odds are it will not be
On the current drives...?
Yes, the current drives... I mean that if you take the current RAID
array, connected SATA adapters to the drives and tried to retain the
data, use them on a new motherboard's SATA RAID controller, it most
likely wouldn't work, you would have to recreate the array on the new
motherboard and copy back the data.
Do you mean upgrading the motherboard and the CPU as well?
I mean, upgrading only the CPU, not the motherboard, but still getting
another PATA HDD so you can make backups and move data around without
this problem of having the data "stuck" on the RAID 0 array.
But other people are saying I don't need to change the board with a new
Barton CPU, that my PC2700 ram will do fine. I have a nVidia GeForce 4MX
card (which I was thinking of upgrading when Half Life 2 or Doom 3 is out).
Won't I just be able to stick the new CPU in, find out what the new setting
should be, and hey presto?
Yes, according to reports from others, it is possible, likely to work.
Not having your motherboard in front of me with the Barton CPU plugged
into it, I can't guarantee anything, but that is what I would do, buy
the CPU and try it.
Excellent
Seems easy enough. You'll hear me scream if I get stuck.
It usually is easy, I have KT333 boards running CPUs at DDR333 FSB,
but the issue was one of whether the BIOS would be confused, not POST,
and apparently that's not an issue based on other's reports of
success.
Sorry for the thicko questions - it would have to be at least 40Gb, wouldn't
it? Assuming that there is more than 20Gb of data.
Well it'd have to be the size of all data on the RAID array of course,
but considering the price/size ratio of today's drives, something in
the neighborhood of >=60GB might be most cost-effective.
Now,
It's a Promise PDC20276.
Someone else may know, but I don't recall if that controller, and
whichever BIOS, allows creating a mirrored array with only one drive,
retaining the data. I do vaguely recall Promise has a Windows utility
that will dupe the data to the second drive.
Lost again. Copy data (and partition? )onto first new drive. Add second new
drive onto the existing two drive array and tell it to mirror it on? Then
I'd have two striped and a mirror?
I didn't think you could have a single span over two drives in mirroring? I
thought the whole idea was to have two separate copies?
You wouldn't have a span for mirroring, it's just a temporary measure
to hold the data, juggle it between the drives, so you have the RAID 0
array's data first copied to the new drive, then those drives in the
RAID 0 array are to be reconfigured to store the data, freeing up the
new drive to be part of the new RAID array. At this point it's
important to know exactly what you want to do, not only with the new
drives, but the motherboard. Once you have those parts it'll be
easier to describe the process specific to your situation.
In other words, rigth now to copy off the data you need a minimum of a
drive large enough to hold all the data currently stored on the RAID 0
array. If you wanted this new drive to be part of a new mirrored
array, instead of reusing the old drives for a mirrored array (which
of course would only be 20GB large), then buy a second new drive of
same capacity as the first new drive. At least one of the new drives
needs be PATA. The other can be SATA IF you're getting the new
motherbord, or PATA if not.
What about if I get two new 40 or 60Gb drives, copy the existing data from
the current array on to it. Delete current RAID setup and remove old drives.
Put in new drive with the copied data on it, and add the second new drive.
Then tell the Fastrak controller(?) to mirror it to the second drive. Would
that work?
That is what I was attempting to describe before, but I dont' know if
your controller will accept the single drive being defined as a
mirrored set, without losing the data.
If you get two new drives, both PATA, you don't have to do any of
this, it is much easier. Install both new drives on the RAID
controller (doesn't really matter where for the time being, any
channel and position), then define the new drives as the mirrored RAID
1 array, partition and format, then copy the data from the RAID 0
array to this new RAID 1 array. That's all, you have the new array
with the data, can unplug the old drives and boot up, verify that it
works and you have all data, then do whatever you want with the old
drives.
One question: when I initially copy the data, do I connect the
new drive to the master IDE channel or to the RAID array?
You could attach the drive to either the motherboard's integrated IDE
or the RAID controller.
I want to be absolutely sure of what I'm doing since I don't have any
backup. Hence the need to move to mirroring (and at some point, get a DVD
backup solution in place).
The key is to verify that you have ALL data copied over, that the new
copy works to run the system, before changing anything relating to
the source of the data from the copy operation. If you buy two new
drives, each in itself large enough to hold all the data on the
currently existing array (which we'll call 40GB of data), then as I
mentioned above, you can create the new mirrored array with these new
drives and only copy over the data once. Then you can unplug the old
drives and still have two copies of the data.
Just be sure that when configuring the new drives as a mirror in the
RAID setup screen, that you do not change any settings of the
already-existing RAID array. No settings relating to the current RAID
0 array should be changed till you have a working copy on the new
drives.
So they would be partitioned simultaneously. However, I'm hoping, using
Ghost I could just copy it over, partitions and all...?
I don't know. I think Ghost can copy TO the new mirrored array fine,
but I'm unsure if it can read from the RAID 0 array, might need a
driver loaded but I'm only guessing.
Dave