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How to expand existing volume size of Dell Compellent Series 4 ??
Hi,
We have a old Dell Compellent Series 40. I never worked on it before.
Is there any way to increase the existing volume size without going off line of the volume, please ?
We created a 500GB volume and mounted it to a server, Several Replays are taken as policy applied. The volume usage is around 30% when we see it in server end, but in the storage end it looks almost full, so remaing space is very low!!
As there are having Replays policy, I am in confusion to understand the space usage of the volume with the indications through "Configured Space". "Free Space", "Total Disk Space", "Actual Space". "Replay Space" ???
Please see the attachment.
Thank you in advance, appreciate your kind reply .
~Jamshed
rswislocki
52 Posts
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October 20th, 2016 01:00
1. Replay profiles -> new replay profile for example: every day at XX:AM, expiration - 1 day
2. Volumes -> Volume settings -> apply new replay profile, remove existing replay profile
„Understanding RAID with Dell S.C. Series Storage” page.38 Replay and Data Progression http://en.community.dell.com/techcenter/extras/m/white_papers/20442059
- Storage Manager 2016R2 Storage Center Administrator Guide (page. 20 How storage virtualization works and page 77 Replays) or Dell Enterprise Manager R3 Administrator Guide.
BVienneau
115 Posts
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October 14th, 2016 13:00
If you have available disk space in the SAN then you can just expand the volume on the SAN then within the OS/hypervisor do a rescan of the disks and extend the volume. This can be done online.
Configured Space = what the OS sees as the volume size
Free Space = free space within the OS
Total Disk Space = combination of used space plus any spaced used by snapshots including the RAID overhead (for example: if it's 5 GB configured and no snapshots for a R10 volume then you are using 10 GB (because the data is written 2 times)).
Actual Space = Active + Replay Space
Replay Space = Space consumed by Replay/Snapshot data
jamsheduddin
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October 17th, 2016 00:00
Hi BVienneau,
Thank you for replying.
It has been extended now, 1st time I couldn't because of DC to DR storage replication running, After mirror breaking the replication, volume extension (500GB to 800GB) has been possible.
Another thing is that in the server side we see it is used 28% only. but in the Storage side, it looks almost full as you see in the above picture. So I guess it is because of Replays.
So we tried to expire and delete all Replays, After manually expiring the Replays it come back again few seconds later, as result no space are being free!! There are no Replays policy right now for the volume.
Is there any solution ???
Thank you again for your effort.
~Jamshed