topic Re: raid in Disk Enclosures

raid

Waugh — Sun, 05 Oct 2008 09:30:19 GMT

Hi,

how to replace the disk in raid and recover the data . I have a raid 5 with striped set with distributed parity.

Regards
Rkumar

Re: raid

Jeeshan — Sun, 05 Oct 2008 09:44:18 GMT

HI

is it software RAID or H/W RAID?

Re: raid

Jeeshan — Sun, 05 Oct 2008 09:52:09 GMT

check this pdf file.

Re: raid

Waugh — Sun, 05 Oct 2008 11:08:06 GMT

Hi,

we r using hardware raid. we r using xp10000 storage.

regards
Rkumar

Re: raid

IBaltay — Sun, 05 Oct 2008 14:44:58 GMT

Hi,
if the RAID comes from the XP10k, then it is preformated in these possible variants:
3D+1P
6D+2P
7D+1P
or with concatenation of the array groups
up to the
4x(7D+1P)=28D+4P

Are you speaking on the FS corruption on the host level (LVM) or on the disk failure on the XP10k pls?

Re: raid

Jeeshan — Mon, 06 Oct 2008 02:05:46 GMT

then you need not to worry about recover the data. SAN has their own functionality to recover the data from striped volume.

from OS you didn't need to take any preventive measurment.

Re: raid

Torsten. — Mon, 06 Oct 2008 04:27:32 GMT

For any problems with the XP you should contact your HP support.

Re: raid

Sandeep_Chaudhary — Mon, 06 Oct 2008 05:40:53 GMT

most common raid used in XP is
rais 0+1
raid 5

If the disk which failed is on storage then storage take care of moving the data to spare disk(each disk group has spare disk in XP). When ur HP Engineer replace failed disk the array will copy the data back. U need not worry. Only u have to log a call with HP so that they can come and replace the disk.

Re: raid

DJMC — Mon, 06 Oct 2008 07:26:52 GMT

Hi,
As already stated, the XP will take care of disk failures. Depending on how the disk was failed the data will have been either reconsturcded or copied onto a spare disk. When the HP engineer replaces the disk the data will be copied back from the spare to the new disk. If dial home is configured on the array a call will be automataclly logged with HP and an enginner will be in touch to arrange for the disk replacement.

Hope this helps.

Declan