Re: RAIDING different size drives

David Brown wrote
Sydney Lambe wrote

I want to mirror 2 disks mirror using RAID.

Can this be done on a 750GB and 500GB disk?

It's a single user desktop running XP with RAID provided by a PCI
card. Might change the mobo to one with RIAD if it's better?

This is for editing audio. Don't want to lose audio work if a disk
fails so RAID looks right.

I believe that with a hardware RAID solution (and I think that also applies to pretend hardware RAID that is often
supported by motherboards and cheap cards), you have to use whole disks in the RAID. That means the 750 GB disk will
be treated as 500 GB to make the mirroring work.

Yes, but not all of them will handle that pair.

If you use software raid, you can do it on a partition level - use 250GB of the 750 GB for the OS, software, swap,
etc., and use a 500 GB
partition for mirroring with a matching partition on the other disk.

Of course, the idea of software RAID on windows to improve reliability is an oxymoron.

Wrong.

Use RAID on a windows machine to improve speed, but if your data is important then save it regularly on a reliable
system.

Or use mirroring to improve the reliability.

File system corruption, due to Windows itself or to malware running on the system, far outweighs the risk of hardware
disk failures

Wrong.

(though corruption may affect only some files, while hardware failure can affect the whole disk).

Mangled all over again.

And when Windows or malware mucks up your file system, your RAID 1 setup ensures that the same errors are copied over
to the mirrored drive.

Just as true of any other OS.

In short, RAID can improve speed and/or uptime, but it does not noticeably improve data security,

Wrong.

and it is not a substitute for backups.

But does give added protection against the failure of a drive.


.

Relevant Pages

  • Re: RAIDING different size drives
    ... applies to pretend hardware RAID that is often supported by ... GB partition for mirroring with a matching partition on the other disk. ... No need to do that if you have adequate backups. ...
    (comp.sys.ibm.pc.hardware.storage)
  • Re: ccd mirror vs. raidframe
    ... > advantages/disadvantages does it have in comparison to raidframe ... RAID frame supports more than just striping and mirroring. ... Not used ccd as until your post I wasn't aware it could do mirroring. ... also to use mirroring I'd need an additional disk (I have 3 x 200GB disk ...
    (comp.unix.bsd.openbsd.misc)
  • RE: SQL Server 2000 STD vs RAID performance
    ... A hardware disk array improves I/O performance because I/O functions, ... Data striping (RAID 0) is the RAID configuration with the highest ... A common installation technique for relational database ... If data must be quickly recoverable, consider mirroring the transaction log ...
    (microsoft.public.sqlserver.server)
  • Re: Harddrive redundancy
    ... Mirroring is available only in Windows 2000 Server. ... So, buy a RAID controller. ... It's under computer management, storage, disk ...
    (microsoft.public.win2000.security)
  • Re: raid 1 and df command
    ... Then I created raid 1 (mirroring) on ... I installed Fedora 5 default install. ... The OS should see only 160 GB right because the first disk is mirrored ... physical components of a hardware RAID to be seen as individual disks. ...
    (comp.os.linux.misc)