- Community Home
- >
- Storage
- >
- Midrange and Enterprise Storage
- >
- HPE 3PAR StoreServ Storage
- >
- Re: 3PAR LDFree CPG
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-28-2020 12:09 AM
09-28-2020 12:09 AM
Hello. How to correctly calculate the size of free space on a CPG group if the system has different sizes of hard drives? The LDFree do not change for six month, but our DB continue to grow. I don't believe this parameter.
Work cli% showspace -cpg SSD_r5
----------------------(MiB)-----------------------
CPG -------EstFree------- -----------Efficiency------------
Name RawFree LDFree OPFree Base Snp Free Total Compact Dedup Compress DataReduce Overprov
SSD_r5 520192 390144 - 1321600 1536 1005440 2328576 1.37 - - - 0.58
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-28-2020 03:48 AM - last edited on 06-24-2021 07:20 AM by Ramya_Heera
09-28-2020 03:48 AM - last edited on 06-24-2021 07:20 AM by Ramya_Heera
Re: 3PAR LDFree CPG
Many details missing but I am assuming you have only SSD drives in this system and one CPG where VVs got created.
LDFree is something which will come into use when all existing LD allocated space exausted. Any new space allocation 3PAR will do by taking space from LDFree or in case any other condition met for CPG growth.
In your case we can see Free space shows 1005440 MB which is approx 1000GB or 1TB of space. This should take care of space requirement actually. If you really want to freeup this space and want to see this space getting added to LDFree then run compactcpg on this SSD CPG.
Note: Better to run compactcpg when no other tune operation active. Also you need to monitor the compactcpg task and monitor for performance issues. If severe performance then cancel the task. Otherwise run compactcpg in out of office hours.
There are few commands if you want to crossverify space in CPG level,
showcpg -d
showcpg -r
showcpg -s
showsys -space
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
************************************************************************
I work for HPE
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-28-2020 05:06 AM
09-28-2020 05:06 AM
Re: 3PAR LDFree CPG
Thank you. What about mixed size drives? 1000 GB is a raw free space. I cannot use all free space of 920 Gb drives, because the system use only 480 Gb
i% showcage
Id Name LoopA Pos.A LoopB Pos.B Drives Temp RevA RevB Model FormFactor
0 cage0 0:1:1 0 1:1:1 0 10 24-27 409b 409b DCN2 SFF
Work cli% showpd
---Size(MiB)--- ----Ports----
Id CagePos Type RPM State Total Free A B Capacity(GB)
0 0:0:0 SSD 100 normal 456704 72704 0:1:1* 1:1:1* 480
1 0:1:0 SSD 100 normal 456704 4096 0:1:1* 1:1:1* 480
2 0:2:0 SSD 100 normal 456704 62464 0:1:1* 1:1:1* 480
3 0:3:0 SSD 100 normal 456704 7168 0:1:1* 1:1:1* 480
4 0:4:0 SSD 100 normal 456704 76800 0:1:1* 1:1:1* 480
5 0:5:0 SSD 100 normal 456704 9216 0:1:1* 1:1:1* 480
6 0:6:0 SSD 100 normal 456704 75776 0:1:1* 1:1:1* 480
7 0:7:0 SSD 100 normal 456704 2048 0:1:1* 1:1:1* 480
8 0:8:0 SSD 150 normal 872448 435200 0:1:1* 1:1:1* 920
9 0:9:0 SSD 150 normal 872448 359424 0:1:1* 1:1:1* 920
---------------------------------------------------------------------
10 total 5398528 1104896
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-28-2020 05:20 AM
09-28-2020 05:20 AM
Re: 3PAR LDFree CPG
% showpd -c
-------- Normal Chunklets -------- ---- Spare Chunklets ----
- Used -- -------- Unused -------- - Used - ---- Unused ----
Id CagePos Type State Total OK Fail Free Uninit Unavail Fail OK Fail Free Uninit Fail
0 0:0:0 SSD normal 446 302 0 71 0 0 0 0 0 73 0 0
1 0:1:0 SSD normal 446 370 0 4 0 0 0 0 0 72 0 0
2 0:2:0 SSD normal 446 313 0 61 0 0 0 0 0 72 0 0
3 0:3:0 SSD normal 446 367 0 7 0 0 0 0 0 72 0 0
4 0:4:0 SSD normal 446 299 0 75 0 0 0 0 0 72 0 0
5 0:5:0 SSD normal 446 365 0 9 0 0 0 0 0 72 0 0
6 0:6:0 SSD normal 446 300 0 74 0 0 0 0 0 72 0 0
7 0:7:0 SSD normal 446 372 0 2 0 0 0 0 0 72 0 0
8 0:8:0 SSD normal 852 289 0 425 0 0 0 0 0 138 0 0
9 0:9:0 SSD normal 852 364 0 351 0 0 0 0 0 137 0 0
-----------------------------------------------------------------------------------------
10 total 5272 3341 0 1079 0 0 0 0 0 852 0 0
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-29-2020 10:16 AM
09-29-2020 10:16 AM
Re: 3PAR LDFree CPG
It will be difficult to comment without knowing your CPG defination. We need to understand RAID, HA and set size configured on the CPG.
You can provide below output,
showcpg -sdg
Mixing different size not a good practice. You can seperate drives with different size in different CPG as well.
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
************************************************************************
I work for HPE
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-29-2020 11:41 PM
09-29-2020 11:41 PM
Re: 3PAR LDFree CPG
% showcpg -sdg
-----(MiB)-----
Id Name Warn Limit Grow Args
0 SSD_r1 - - 8192 -ssz 2 -ha mag -t r1 -p -devtype SSD
1 SSD_r5 - - 8192 -ssz 4 -ha mag -t r5 -p -devtype SSD
2 SSD_r6 - - 8192 -ssz 8 -ha mag -t r6 -p -devtype SSD
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-29-2020 11:49 PM
09-29-2020 11:49 PM
SolutionYou are already with HA as mag so that will try to give you max space.
Few of your drives are with very less chunklet left so you should consider running compactcpg immediately and then do a tunesys if required to rebalance chunklets accross all drives.
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
************************************************************************
I work for HPE
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-30-2020 12:39 AM
09-30-2020 12:39 AM
Re: 3PAR LDFree CPG
Thank you! What does "-ha mag" mean?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
09-30-2020 04:03 AM
09-30-2020 04:03 AM
Re: 3PAR LDFree CPG
HA means High Availability
Mag means Magazine or drive
In CPG we can see HA set as mag which means it's drive level redundandancy in order to create RAID set.
You can go through 3PAR Concepts Guide and Architecture document that may help,
https://support.hpe.com/hpesc/public/docDisplay?docId=c04204225
https://h20195.www2.hpe.com/v2/getpdf.aspx/4aa3-3516enw.pdf
Hope this helps!
Regards
Subhajit
I am an HPE employee
If you feel this was helpful please click the KUDOS! thumb below!
************************************************************************
I work for HPE