Extending a Raid 5?

Mikoyan · 2 Apr 2014 at 09:21

Hi guys, (mods placing another thread here as this may be better suited to the Server posters, hope ok)

Have a server which I have just extended the existing RAID 5 setup using the following guide:

http://h20566.www2.hp.com/portal/si...ac.admitted=1396425176188.876444892.199480143

The new Logical Drive 1 shows as 1.6GB Raid 5, was 808GB previously...

However the partitions on this volume have not shown this expansion...

I would have thought it would have made another 800GB available for me to use..what am I missing here?

Here is the array information:
Array
Status OK
Array A
Drive Type SAS
Used Space 1.9 TB (100%)
Total Usable Space 1.9 TB

Disk Partition Information Partition Number: 1, Size: 100 MB, Mount Point: Unknown
Partition Number: 2, Size: 29.9 GB, Mount Point: C:\
Partition Number: 3, Size: 808.1 GB, Mount Point: D:\

Ringiho · 2 Apr 2014 at 10:03

It might just be a case of extending the partitions. From the info above it looks as if the array is expanded but you've not created new partitions/extended the old ones.

Open up disk management and you should have additional storage ready to partition!

anything I don't mind · 2 Apr 2014 at 13:19

rescan disk management and extend partition or use diskpart to extend it.

neil_g · 2 Apr 2014 at 17:22

rescan in disk management so it shows the additional space.

launch diskpart:
list vol [return] (note # of drive to extend)
sel vol x [return] (where x is the # from above)
extend [return]

profit.

Mikoyan · 3 Apr 2014 at 14:53

Thanks guys I ended up rebooting, it probably would have been quicker to rescan! but cheers!

ecksmen · 3 Apr 2014 at 15:11

neil_g said:
rescan in disk management so it shows the additional space.

launch diskpart:
list vol [return] (note # of drive to extend)
sel vol x [return] (where x is the # from above)
extend [return]

profit.

This would fail a "least administrative effort" type question in a Microsoft exam, if you're in disk management you can simple expand the volume by right mouse click and select expand - following the wizard to include the freespace (or subset of) into the existing volume. Similarly if using diskpart you can issue a rescan with the command "rescan". There is little need to use both tools...

neil_g · 8 Apr 2014 at 18:08

I don't recall there being an extend option on the right click context menu but you're probably right. that's the way I was shown waaaaay back by an HP SAN engineer.

anyway since when have MS been experts in least effort?

john_s · 9 Apr 2014 at 08:47

neil_g said:
anyway since when have MS been experts in least effort?

They've been doing it with their software for years!