Reserved Copy size of Physical copy is showing more than original size.

[Manmath]

Hi

Can anyone revert on my below query:-

Reserved copy size of physical copy is showing 311GB whereas original virtual volume size is 100GB.

Regards...Manmath P.

[yapkl]

 Could you share an output of showvv -s and highlight the volumes in question?

[Manmath]

Hi Yap,

Thanks for reply !!! Please find the below details:-

RBS3PAR01 cli% showvv -s

                                               ---Adm---- -------------Snp------------- --------------Usr--------------                                        
                                               ---(MB)--- -----(MB)------ --(% VSize)-- ------(MB)------- --(% VSize)-- ------(MB)------- -Capacity Efficiency-
 
  947 FINACLE_ARC.1                 cpvv base    512   72  116224   96836  94.6   0   0   102400   102400 100.0  --  --   219136   102400          1.5       --
 3814  FINACLE_ARC.1.0947.0000.ro   snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
28740  vvcp.947.948                 snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
  948   FINACLE_ARC.1.PC            cpvv pcopy   768  231  310272  301342 294.3   0   0   102400   102400 100.0  --  --   413440   102400          1.5       --
 6511    FINACLE_ARC.1.PC.TEST.VC   snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
12685    FINACLE_ARC.1.PC.findev.vc snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
19309    FINACLE_ARC.3.PC.VC        snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
15650    FINACLE_ARC.2.PC.VC        snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
15983    FINACLE_ARC.1.PC.VC        snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
   33 FINACLE_DB.2                  cpvv base    512   13   33024     370   0.4   0   0   102400   102400 100.0  --  --   135936   102400          2.0       --
28716  vvcp.33.420                  snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
  420   FINACLE_DB.2.PC             cpvv pcopy   768  223  286336  268354 262.1   0   0   102400   102400 100.0  --  --   389504   102400          1.7       --
 6472    FINACLE_DB.2.PC.TEST.VC    snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
12671    FINACLE_DB.2.PC.findev.vc  snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
19311    FINACLE_DB.2.WTSM.PC.VC    snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
15636    FINACLE_DB.2_1.PC.VC       snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --
15970    FINACLE_DB.2.PC.VC         snp  vcopy    --   *0      --      *0  *0.0   0   0       --       --    --  --  --       --   102400           --       --

Regards......Manmath P.

[Manmath]

Hi Yap,

Please observe into the FINACLE_ARC.1.PC (Physical Copy Size) and FINACLE_DB.2.PC as well.

Regards......Manmath P.

[Manmath]

HI Yap,

Can you make me understand this query ???

[yapkl]

You seem to have multiple snapshots under this main volume. At least 5 snapshots under that physical copy? I think that's why you see so much higher reserved space for this physical copy.

[Manmath]

Hi Yap,

Thanks for your feedback.. But i just want to highlight that the same (Reserved Copy size of Physical copy) is less in size last month but In recently we have reclaimed around 500GB from decommissioned hosts and now we are not able to see that much of add on Free space on storage. All CPG's have already compacted.

Is that possible the space reclaimed has been utilized by those multiple virtual copies (snapshots) ???

Regards...... Manmath P.

[yapkl]

Yes, the snapshots will consume some space as the deltas are being tracked.

[Manmath]

Hi Yap,

What does this delta mean ???  Is it Lun delete being tracked by the 3PAR Storage system ??

Regards..... Manmath P.

[yapkl · Accepted solution]

It is the delta that is tracked. When you take a snapshot, 3PAR has to track all the changes/delta from the time you created the snapshots. All these require space.

If you have space concerns, and you DON'T need the snapshots, you can delete those to free up space.

There is a whitepaper on 3PAR virtual copy (snapshots) but the link seems to be dead:

https://www.hpe.com/h20195/v2/GetPDF.aspx/4AA6-4486ENW.pdf

You can have a look at this for more info on snapshots on 3PAR:

http://h20564.www2.hpe.com/hpsc/doc/public/display?docId=mmr_kc-0117682

[Manmath]

Hi Yap,

Thanks for the Feedback and make me fully understand. 

[Sheldon Smith]

You can usually search Google for the given document number. In this case, 4AA6-4486ENW.

[Manmath]

Sheldon..

The given document number is not working.. Will please give me working one.

[Dennis Handly]

>The given document number is not working

Hmm, the first two google finds aren't there.  You can look at the cached copy.

Searching using hpe.com finds "HPE 3PAR Virtual Copy Snapshots and copy data management" but that link fails too.  :-(

Found a blog article that should be helpful:

https://community.hpe.com/t5/Around-the-Storage-Block/Snapshots-The-Values-of-Virtual-Copy/ba-p/6965498