Re: How OS srites data to a spanned volume ?

You also have to take into account the location within the concatenated
volume of internal structures like the MFT. I do recall a relatively ugly
incident a few years back, circa 2003, where a storage admin up in the
Chicago area accidently allocated a hyper that was part of a concatenated
volume to another volume and formatted it. A big chunk of the MFT went
missing. Surprized me that it was even possible to allocate a hyper to two
different volumes at the same time. I hope that storage vendor corrected
the flaw in their platform by now. Anyway, the data being hosted was Notes
so in the end is was possible to recover all these flat files up the point
where the hyper was gone. Hmmm. (Flashbacks of a 5 am bleary eyed phone
call 4 hours after getting back on a redeye and something about Kip and a
chair. I think it's time for an adult beverage. )











"Edwin vMierlo [MVP]" <EdwinvMierlo@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in
message news:OOHYbYMZIHA.4712@xxxxxxxxxxxxxxxxxxxxxxx
If it is spanned, than it is "concatenated", e.g. it will fill up Disk0
completely, then move to Disk1, and then move to Disk2

(but in the order they are "bound" when creating the spanned volume, so if
you "bind" Disk0 and Disk2 first, then Disk1, it will fill up 0 then fill
up
2 then fill up 1)

If it is striped, then it will write a stripe to Disk0, then a stripe to
Disk1... and so on

HTH,
Edwin.



"Manig" <Manig@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote in message
news:0E5D4AA1-5622-4018-8D33-DBFB741384D3@xxxxxxxxxxxxxxxx

Hi all,
I want to know in which order windows writes data to the spanned
volume. Consider a volume D: which spans across 3 physical disks ( Disk
0,
Disk 1, Disk 2 ). I can get the disks that the volume spans using VDS.
But
I
want to know in what order OS writes data to the spanned volume.ie
Whether
Disk0 is the first disk or Disk1 the first ....? Is it based on the order
in
which disks were created or Size of the disks or ...? Can anyone help me
on
this ?

Thanks in Advance ,
Mani





.

Relevant Pages

  • Re: How OS srites data to a spanned volume ?
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