Skip to main content
NetApp Knowledge Base

What does the hotspot value indicates in reallocate measure?

Views:
439
Visibility:
Public
Votes:
0
Category:
data-ontap-8
Specialty:
7dot
Last Updated:

Applies to

Data ONTAP

Answer

After performing a reallocate measure, the following output is displayed:
reallocate measure -o -l /vol/logs/measure_log_dblun/vol/dbvol/dblun
Fri Nov 06 18:18:26 CET [filer: wafl_scan_worker: wafl.reallocate.check.high:info]: Allocation check on '/vol/vmw_alg_09' is 6, hotspot 19 (threshold 4), so will reallocate.

Threshold is a number between three (layout is moderately optimal) and 10 (layout is not optimal). The default is four.   
Do not confuse the result with the hotspot.
The hotspot value indicates that a portion of the scanned object has a layout that is less optimal than the remainder of the object.
'Hot spots' is the calculation of whether to start a reallocation. The log message might advise you to consider performing a reallocation when the average optimization is better than the threshold; however, a small percentage of the total data is very poorly optimized.

Additional Information

additionalInformation_text

 

NetApp provides no representations or warranties regarding the accuracy or reliability or serviceability of any information or recommendations provided in this publication or with respect to any results that may be obtained by the use of the information or observance of any recommendations provided herein. The information in this document is distributed AS IS and the use of this information or the implementation of any recommendations or techniques herein is a customer's responsibility and depends on the customer's ability to evaluate and integrate them into the customer's operational environment. This document and the information contained herein may be used solely in connection with the NetApp products discussed in this document.
Scan to view the article on your device