Raid 1 To Raid 0

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The following system as 2 IDE drives in a raid 1 configuration.  I want
to change to Raid 0.  I have made 3 complete images.  The system has
matching harddrives.  Can I just delete raid 1 and reset the controller
to raid 0 or is it more complicated?

      Computer Type                                     Advanced
Configuration and Power Interface (ACPI) PC
      Operating System                                  Microsoft
Windows XP Professional
      OS Service Pack                                   Service Pack 3
      Internet Explorer                                 8.0.6001.18702
(DirectX 9.0c)
      Computer Name                                     ACCES-WINXP
      User Name                                         Bill Bradshaw
      SMTP E-mail Address                     
      Logon Domain                                      ACCES-WINXP
      Date / Time                                       2012-08-26 /

      CPU Type                                          Intel Pentium
IIIE, 800 MHz (6 x 133)
      Motherboard Name                                  Tyan S1854(-A)
Trinity 400  (6 PCI, 1 AGP, 3 DIMM)
      Motherboard Chipset                               VIA VT82C694X
Apollo Pro133A
      System Memory                                     512 MB  (SDRAM)
      DIMM2                                             256 MB PC133
SDRAM  (3.0-3-3-6 @ 133 MHz)  (2.0-2-2-5 @ 100 MHz)
      DIMM3                                             256 MB PC133
SDRAM  (3.0-3-3-6 @ 133 MHz)  (2.0-2-2-5 @ 100 MHz)
      BIOS Type                                         Award Modular

   [ Drive #1 - SiI     RAID 1 Set 0 (111 GB) ]

    #1 (Active)      FAT32            C: (ACCES_WIN)
0 MB    18002 MB
    #2               NTFS             D: (ACCES_PROG)
18002 MB    13005 MB
    #3               FAT32            E: (ACCES_DATA)
31008 MB    82960 MB
    #4               FAT16            F: (ACCES_SBE)
113968 MB      502 MB


  [ SiI RAID 1 Set (Unknown) ]

    ATA Device Properties:
      Model ID                                          SiI RAID 1 Set
      Serial Number                                     Unknown
      Revision                                          2.00

  [ ST3120026A (5JS4FFP2) ]

    ATA Device Properties:
      Model ID                                          ST3120026A
      Serial Number                                     5JS4FFP2
      Revision                                          8.54
      Device Type                                       ATA-100
      Parameters                                        232581
cylinders, 16 heads, 63 sectors per track, 512 bytes per sector
      LBA Sectors                                       234441648
      Buffer                                            8 MB
      Multiple Sectors                                  16
      ECC Bytes                                         4
      Max. PIO Transfer Mode                            PIO 4
      Max. UDMA Transfer Mode                           UDMA 5 (ATA-100)
      Active UDMA Transfer Mode                         UDMA 5 (ATA-100)
      Unformatted Capacity                              114473 MB

    ATA Device Features:
      48-bit LBA                                        Supported
      Advanced Power Management                         Not Supported
      Automatic Acoustic Management                     Not Supported
      Device Configuration Overlay                      Supported
      DMA Setup Auto-Activate                           Not Supported
      General Purpose Logging                           Supported
      Host Protected Area                               Supported,
      In-Order Data Delivery                            Not Supported
      Native Command Queuing                            Not Supported
      Phy Event Counters                                Not Supported
      Power Management                                  Supported,
      Power-Up In Standby                               Not Supported
      Read Look-Ahead                                   Supported,
      Release Interrupt                                 Not Supported
      Security Mode                                     Supported,
      SMART                                             Supported,
      SMART Error Logging                               Supported
      SMART Self-Test                                   Supported
      Software Settings Preservation                    Not Supported
      Streaming                                         Not Supported
      Tagged Command Queuing                            Not Supported
      Write Cache                                       Supported,

    ATA Device Physical Info:
      Manufacturer                                      Seagate
      Hard Disk Name                                    Barracuda 7200.7
Plus 120026
      Form Factor                                       3.5"
      Formatted Capacity                                120 GB
      Disks                                             2
      Recording Surfaces                                3
      Physical Dimensions                               146.56 x 101.85
x 26.1 mm
      Max. Weight                                       635 g
      Average Rotational Latency                        4.16 ms
      Rotational Speed                                  7200 RPM
      Max. Internal Data Rate                           683 Mbit/s
      Average Seek                                      8.5 ms
      Interface                                         Ultra-ATA/100
      Buffer-to-Host Data Rate                          100 MB/s
      Buffer Size                                       8 MB
      Spin-Up Time                                      10 sec

    ATA Device Manufacturer:
      Company Name                                      Seagate
Technology LLC
      Product Information

 PCI Devices:
  Bus 0, Device 17, Function 0                      Silicon Image SiI
0680 Ultra-ATA/133 Medley RAID Controller

 [ Silicon Image SiI 0680 Ultra-ATA/133 Medley RAID Controller ]

    Device Properties:
      Device Description                                Silicon Image
SiI 0680 Ultra-ATA/133 Medley RAID Controller
      Bus Type                                          PCI
      Bus / Device / Function                           0 / 17 / 0
      Device ID                                         1095-0680
      Subsystem ID                                      1095-3680
      Device Class                                      0104 (RAID
      Revision                                          02
      Fast Back-to-Back Transactions                    Supported,

Sorry for maybe overkill on information.


Re: Raid 1 To Raid 0

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Sadly I suspect this depends on the RAID controller, but my guess would be
that the RAID controller won't let you change the type of RAID and instead
you will have to delete your current RAID 1 and create a new RAID 0.
Obviously this will wipe what you'got. However this is a gest guess on my

If are 100% confident that you can restore from one of those images you've
taken, then go ahead and change the RAID configuration. But be prepared to
need to reinstall windows and then restore from one of your images.

BTW, when posting it is wise to mung your email address. This is because
spammers tend to crawl newsgroups (and forums etc) for email addreses. For
more information see: /

Hope this helps.
 Brian Cryer

Re: Raid 1 To Raid 0

Brian Cryer wrote:
Quoted text here. Click to load it

Some chipsets, the RAID software has "migration" features. Intel
does that, Nvidia does it (MediaShield). With those companies, the
manual has a table, that notes which formats are supported for
migration. Not all formats have migration. An example of an
important one, is being able to go from one disk, to a two
disk array. But there are other options as well.

But the SIL0680 (started as CMD0680), is about as "soft" a
soft RAID as you can get. And development of the RAID feature
set probably stopped a decade ago. Mainly because the
chip was mature, and just minted money for the manufacturer.
So I don't think migration was added to that one.

Restoring from backup, is probably as good a means of changing
modes, as any. A good backup software, comes with a CD you can
boot, to do the restoration, and that solves the problem
of having an OS to use at the time. As long as the
restoration CD has the right driver, you're all set.

Since the change is between two RAID modes (0 and 1), the
same RAID driver should still work, and that's most of the
painful part. So the OS should still be ready to boot,
after the restore operation completes.

I suppose the other issue, is where the RAID console is located.
To change RAID modes, the metadata on the disks has to be changed.
Some motherboard RAIDs, there's a BIOS screen for setting up the
disks. You'd delete the original array, and "add" a new array.
That marks the disks with the new RAID-type information for later.
Then, when you boot your restore disk (with the RAID driver for
a SIL0680), it'll immediately be able to work with the new

    ("Medley Manual Rev11.pdf")

    "Creating and deleting RAID sets is a function found in the BIOS.

     During bootup, the following message will appear, pausing for a
     few moments to allow the user to choose what to do:

     Press F3 to enter RAID utility"

If the computer has been booting from that RAID, all this time,
then there are no other BIOS functions to check for. It would
mean the BIOS is already loading the code module off the flash
chip on the SIL0680 card, which contains the Extended INT 0x13
code to read the disks. A couple of my motherboards here,
are set by default to not do "Interrupt 19 capture" or "INT 0x13 capture",
words to that effect. That has to be enabled, to get the RAID BIOS
to load at POST. But if the computer has been booting from the
RAID, then you know everything is in order, and only the RAID
array needs to be re-defined (old array "deleted", new array "added").


Re: Raid 1 To Raid 0

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Thanks.  I did make multiple images so I should be able to recover at
least one of them.  I also have an Ultimate CD for Windows.


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