In ERRORLOG 
I have this message
Error: 18210, Severity: 16, State: 1.
BackupIoRequest::ReportIoError: write failure on...

 create table ALPHABET
(
id int IDENTITY(1,1),
Characters NCHAR(1) PRIMARY KEY )

DECLARE @asciiCode INT= 65 WHILE @asciiCode <= 90 BEGIN

yes
or it is an exceptional action
I have to run it only if I have disk saturation