This post is more than 5 years old
14 Posts
1
4478
Thin Pool Subscribed % or Allocated %
I am always confused as to which I have to be more concerned with, my thin pool Subscribed percentage or my Allocated percentage..
If am allowing oversubscription of 150% on my thin pool.. then do I need to worry about keeping my allocated percentage lower, or my over subscription percentage lower? Any help keeping this straight is appreciated.
anoopcr
148 Posts
0
May 12th, 2012 02:00
You have to always keep an eye on Allocated percentage.that is the actual allocated %
KShanker_6d309f
7 Posts
1
May 14th, 2012 01:00
As said by Anoop, you should always monitor the allocated(%) not just short term but also have it monitored for long term, it can help you to do effective capacity planning, you can easily determine growth rate in last 1 month, last quater or last 6 month or yearly basis. based on these data will help to you can plan how many disks you need in future.
few commands to determine the pool usage.
symcfg -sid list -thin -gb -pool -detail
Symmetrix ID: 00012345678
S Y M M E T R I X T H I N P O O L S
----------------------------------------------------------------------
Pool Dev Dev Total Enabled Alloc Alloc Subs
Name Emul Config GBs GBs GBs (%) (%)
------------ ----- ------------ -------- -------- -------- ----- -----
POOL1 FBA RAID-5(3+1) 64412.3 64412.3 11853.8 18 108
Total -------- -------- -------- ----- -----
GBs 64412.3 64412.3 11853.8 18 108
symcfg -sid list -thin -gb -pool -detail -v
Symmetrix ID: 00012345678
Symmetrix ID : 00012345678
Pool Name : POOL1
Pool Type : Thin
Dev Emulation : FBA
Dev Configuration : RAID-5(3+1)
Pool State : Enabled
# of Devices in Pool : 328
# of Enabled Devices in Pool : 328
Max. Subscription Percent : 143
Rebalance Variance : 1%
Max devs per rebalance scan : 256
Enabled Devices(328):
{
------------------------------------------------------
Sym Total Alloc Free Full Device
Dev GBs GBs GBs (%) State
------------------------------------------------------
sauravrohilla
859 Posts
0
May 14th, 2012 01:00
Use SMC email alert system to keep you informed about your pool allocation.
Kennedy_Doss
79 Posts
0
May 14th, 2012 07:00
KShanker:
When I run the command that you suggested, I get different Headers. I dont see Allocated %. Is it because of a different version of Enguinity?
# symcfg -sid 1234 list -thin -gb -pool -detail
Symmetrix ID: 000192601234
S Y M M E T R I X T H I N P O O L S
-------------------------------------------------------------------------------------
Pool Dev Dev Total Enabled Used Used Subs Shared
Name Tech Emul Config GBs GBs GBs (%) (%) GBs
------------ ----- ----- ------------ -------- -------- -------- ----- ----- --------
POOL0 EFD FBA RAID-5(3+1) 1100.1 1100.1 870.5 79 0 0.0
POOL1 FC FBA RAID-5(3+1) 109057.2 35003.5 11056.2 31 212 0.0
POOL2 FC FBA RAID-5(3+1) 80492.6 80492.6 21228.2 26 261 0.0
POOL3 SATA FBA RAID-6(14+2) 335373.7 114842.6 63307.9 55 0 0.0
Total -------- -------- -------- ----- ----- --------
GBs 526023.5 231438.8 96462.8 41 123 0.0
SumGuy1
14 Posts
0
May 14th, 2012 12:00
Thank you for the replies, I do appreciate all the responses. I suppose the next question I have then is, if my allocated % is around 65%, but my subscribed % is around 140%, am I to guess that, even though I am using thin provisioning, that a majority of my hosts have requested the full amount of disk space I have made available to them?