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LE - Change partition size with RAID 5 ????

C: 4 GB - 100 Mb free
D: 164 GB - 15 GB free
Is there any way to rebuild the C: partition with the available space ? 15 GB ? Could i create a new partition (Z:), copy all what i have in the C: drive, switch the map letters and boot ? Perhaps, i could get in troubles, but if someone tried something similar.... we never know.
Thank You,

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Re: LE - Change partition size with RAID 5 ????

Hi, to partition a drive you would lose all information on it,
for example if i had

c: 40gb
d: 40gb
if i delete the c: partition i could make 2 partitions of for example 20gb without losing the information on d:
but for what you have you would be better deleting both partitions and recreating as one big one or to your preferences, either way you will have to install windows again, as windows will not work copying it from c: to d: .
Hope this helps


Posted on Jan 02, 2008

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Recently I had replaced one of HDD of my DL580 service Raid 5 configuration. After that everything working fine including user connectivity and database access. My question is both the LEDs on replace

After you replaced the drive, did you rebuild the RAID array? Some of the higher end RAID controllers will try to rebuild automatically (if set to do so) but most must be rebuilt manually.

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Dell poweredge t110 Raid 5 setup on PERC 100 raid config in bios stating Virtual drive degraded and drive 2 is in ready do we remove from drive array and install a new on without data loss

In a RAID 5 config, you need at least 3 drives (you can have more however). A small part of every drive is then reserved for recovery data for the other drives. So two drives together hold all the data needed to restore a 3rd drive.

The Raid Controllers in the Dell Poweredge Servers are hot swappable. So you can just pull the faulty disk and then insert a new replacement drive in the same slot (Needs to be the same type and size or bigger. However, if the disk is bigger than the other 2, then only the size of the two other disks will be used on the new drive). The Raid controller will then see that there is a new disk and automatically start the recovery process. You will be able to see this when you open the Controller software. Once the recovery is done, the RAID 5 will be fully functional again.

While one of the disks is faulty or missing the two remaining disks will continue to work, but at the severely degraded performance. After the rebuild the performance will be back to the way it was before.

The rebuild can take more than an hour, depending on the disk sizes used.

There is also an option on some Controllers to select one drive as a "spare". Then you insert one more disk and set it as spare. It will not start working unless one of the other disks in the Raid fails. That's when it is used automatically as a replacement.

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In my IBM X226 server 2 HDD became unavailable in RAID 5 configuration. now I have replaced the hard disks and rebuild process is continuing. 1962 operating system not found error message is being shown...

Raid level 5 gives you some redundancy in your raid however it only allows you to lose one hard drive, two hdd lost would not permit to recover from. the parity bit can rebuild one hard drive but not two, sorry your raid might be lost

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I have an HPL ML server with 146GB x 3 under RAID 5. I have 3 slots free. Now I need o add 320 HDD to these slots and configure different raid for them and to display the same as a different partition. Is...

dear mjabim,

it is possible...

actually raid has formed with hdd lun noand id nos ,

your old raid may formed with 1,2,3 id's

if you are adding these three disks

it will display as a physical dries in your raid bios and also it will not be covered under your old raid

you create one more raid array on your with those new disks

when you are these things , you have to do very carefully ...

for additional info please reply with raid card model for getting info about raid bios

Aug 11, 2010 | HP Compaq ProLiant DL380 G5 Server

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My dell 2600 cannot identify the hard drives even from the bios.somebody mentioned the raid card.any ideas??

Have you used SCSI drives? I think it should have 80 pins. What was the SIZE of the HDD? You must have the EXACT SAME SIZE for all the Available Hard Drives. Its RAID. You must install (2 or 3 or what ever the number) hard drives with exact the same capacity. IF you have used/ are using 40 GB then you have to use the exact same size. You cannot CHANGE the Size. Then the Raid Array will Fail. If you are using RAID 5 or any similar technology then No Chance.
And you must Launch the "Rebuild Array".
If you have errors while Rebuilding: I would suggest updating the firmware on the remaining drives as there may be an issue with SCSI timeout errors that caused your disk to fall off its array.
Firmware Updates for Windows Server 2003...
Feel free to contact me again.
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1 Answer

About SCSI

Replace the hard drive with a drive that is the same type and the same size, or larger. It will rebuild itself.

By same type I mean that the connector on the back of the drive and the speed of the drive interface must be the same. If the new drive spins at a different rate it will not create a problem, except that if it is slower it will make read/writes slower. If it is larger it will only use part of its capacity, matching the capacity of the other drives.

Note that if you were to replace all drives with larger drives (one at a time) the capacity of the entire array would be the same as the original. If you want a larger array it must be built from the start with that larger capacity.

Take out the bad drive. If you can get the exact same drive, do it, otherwise look it up on the manufacturers web site to find out size and type.

While there are a few possible RAID configurations that you could be using on that server, the chances are overwhelming that it is RAID level 5 that you are using. This RAID level is tolerant of a single drive failure. If you lose another drive before your new drive rebuilds your data will be lost. Hopefully you have a backup.

RAID 5 stripes the data and the parity data across all available drives and when a drive fails, the missing data is rebuilt on the fly from the parity data. When a replacement drive is installed the parity data is used to rebuild the data that belongs on that drive. The advantages of RAID 5 are fault tolerance (of a single drive) and speed because each drive only has to provide or write its portion of the total data being accessed or written.

May 26, 2009 | Acer Altos G710 Server

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Regarding Adding Higher Configuaration HDD Into Exisisting Raid 5

In raid 5 yes you can, yet you won't use the ful hard drive, the system will take only 73GB because that's the smallest HD in your array.

Just, of course, follow the indications for your specific RAID hardware/software about how to add a new HD to it:

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1 Answer

Xseries 346 wont boot

You don't say whether or not your os is on the RAID 5 partition. Assuming that it is (for performance reasons, this is not recommended) then you should check to see if you have the option of configuring a separate raid configuration on your raid card (e.g. do you have a card with more then one RAID channel?) If this is so, I would create a separate RAID 1 array and install the OS just on that. Then you can mount the RAID 5 array with your data intact. Once you're up and running, you can remove the old OS partition, as it's no longer needed.

Apr 02, 2008 | IBM xSeries 346 Server

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Server doesnt boot

First create a floppy disk with your RAID driver for W2K3 Server. Next boot the server with the W2K3 Server CD, and hit F6 when prompted, and S to add the specific driver for your RAID and using the floppy to get the driver installed.

Next boot to the recovery console of W2K3 Server. If it finds your hard disk, it will even ask for your Administrator's Password to continue. If this works, then you are probably home free.

Get to the command line of the W2K3 Server Repair console and perform some directory searches to see if the data is there and intact. You can also perform a CHKDSK from that console.

Once you have made sure your data is there and intact, type these two commands: FIXMBR and FIXBOOT

This should solve the problem and when you EXIT out of the console, it should reboot. Remove the CD and it "should" re-boot from the hard disk.

If you still have problems, let me know with how far you got with the steps above. I have another solution but need to know your RAID controller's model (ServeRAID 5i, 6i, etc).


Apr 02, 2008 | IBM xSeries 346 Server

1 Answer

Defunct drive

You could rebuild the defunct drive with the raid program on your server.

i don't know your type and model of your server.

8488 or 8648 and the model 3 digits.

for this you need serveraid manager

please do not update your firmware or drivers at this point if applicable.

if rebuild of a defunct drive doesnt work you'll need to change the drive. remember in a raid 5 you need min. 3 drives.

Dec 06, 2007 | Computer Servers

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