Re: Disk Mirroring

Tech-Archive recommends: Repair Windows Errors & Optimize Windows Performance

From: John LeMay (jlemay_at_njmc.com)
Date: 02/18/04 

Date: Wed, 18 Feb 2004 13:35:51 -0500

In article <ehYb9Ui9DHA.1268@TK2MSFTNGP12.phx.gbl>,
mtruffa@extravaganzaproductions.com says...
> I am having trouble with disk mirroring. I have 3 ide drives 1 40gb which is
> my system and program drive, partioned into a 15 gb partion for system files
> and the rest for program files. I also have 2 identical 80 gb drive set up
> with promise raid. When I boot up it show the two drives as 1 (promise 1x2
> raid drive). I have converted it to a dynamic drive and when I select new
> volume all it shows is simple and will not let me mirror. The second of the
> 2 80 is not shown and the disk size shows only 80 gb. What am I doing
> wrong??
>

You are trying to mirror an already mirrored set of disks. When you use
the Promise controller to create a mirror set, Windows will only see one
disk. The mirroring is happening behind the scenes. You do not need to -
nor should you - do anything to the "disk" in Windows other than format
it and use it like you would any other disk. 

-- 
John LeMay
kc2kth
Senior Technical Manager
NJMC | http://www.njmc.com | Phone 732-557-4848

Relevant Pages

  • Solaris RAID failover problems
    ... My intent is to mirror the drives completely, ... Can't read disk label. ... WARNING: md: d10: needs maintenance ... WARNING: forceload of misc/md_trans failed ...
    (comp.unix.solaris)
  • Re: Huge Av Disk Queue Length
    ... Write performance = 130 per mirror ... Mixed performance at a 1:1 R:W ratio = 195 IOPS per mirror. ... (sort of like weighted fair queuing for disk performance). ... put a 3020 in each location with FCP shelves for the primary data and SATA ...
    (microsoft.public.exchange.admin)
  • Re: how i locate swap area
    ... what you have with the command 'vgdisplay -v vg00'. ... Why Mirror Copies is 0? ... it seems that you have no disk mirroring. ... Primary Partition Table: ...
    (comp.sys.hp.hpux)
  • Re: Using mirroring to replace drive?
    ... I upgrade and rebuild it. ... drive which happens to be the system disk. ... and mirror the failing drive on the new drive. ... upgrade to 7.0 after establishing the new good drives). ...
    (freebsd-questions)
  • Re: VxVM : Cant open /dev/vx/rdsk/bootdg/rootvol
    ... disk as explained in the document). ... before "Reattaching the plexes rootvol-01, swapvol-01, to the relevant ... of the root mirror and change the state of the rootdisk to detached. ... # vxplex att rootvol-01 rootvol-02 ...
    (comp.unix.solaris)