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Adding additional HDD as RAID-5 on HP Proliant server

AXISHK asked
I have configure a HP Proliant G5 running as RAID-5.

Can I add an additional HDD on the RAID-5, without need to reinstall the OS and restore all the data ? How to achieve this ?

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all proliant servers comes with proliant support pack cd-dvd. depending on model.
it install all the drivers needed and utility.
it allso comes with a firmware mantainance cd that update all the firmaware of your system.
depending on your model you have to download the latest supported version of these disks and update your system.
then depending on wich raid controller are you using  you can reconfigure your raid.
can you give more detailed information on your system? like exact modell of your server, wich raid controller you are using, wich kind of disk and so on.
Depending on the model, the RAID-card and the installed software, you should be able to do this:

Go to start -> programs -> HP System Tools -> Array Configuration Utility (ACU)
In the ACU, select the array you want to expand, and choose "Expand Array" in the right column. You'll also have to expand the Logical Drive.

After you're dine in the ACU, you'll have to tell Windows to extend the volume too: run diskpart, select the volume and "extend".



Windows is running as basic disk. Can I expand the added disk ?

you want to add the new disk to the windows partition?
I think you can't extend the disk where windows is installed from within that running Windows-environment. Just try it: if it doesn't work, diskpart will come back with an error.
You can extend the volume with third party tools, like PartitionMagic or maybe a LiveCD.
but only if you keep it as a basic disk. for example acronis disk director suite, my favourite can manage only basic disks. and can expand windows partition if ti is on the same logical array you created.

Most decent RAID controllers can add a disk to an existing array without losing the data, but the OS may need reconfiguring to see the additonal space.
If its Windows you can use many 3rd party utilities to expand the partition size if its a data drive. Easus partition manager can handle Windows drivers pretty well, even on servers.

If the drive you are expanding is your OS/Boot drive then be very careful and take some seriously good backups before doing anything.


So, does it make more sense to put the disk into dynamic disk in order for the future disk extension ? Dynamic disk could extend the volume but not on basic disk. Am I correct ?

Dynamic disks are better for many things like expanding etc but will not work if it is the OS/boot/system partition.
Expansion etc of those partitions isnt normally available even on dynamic disks.

Basic disks are easier to maintain and many 3rd party applications cannot access dymantic disks properly (ghost software/ partition software etc)