I am running MS SQL 2012 SP3, and using a Compellent SC4020 for storage, when daily I run on the VSC database, DBCC CHECKDB (VSC) with data_purity,all_errormsgs,no_infomsgs, sometimes I get consistency errors, sometimes I don't.  The best I can find on the problem is I might have transient IO errors, in orders when the IO errors clear up, my database is OK.