“Blob Cache” HTTP Error 503, The service is unavailable

HTTP 503 Error
I have experienced with HTTP 503 error which means there are some requests temporary overloaded and therefore temporary services are unavailable.
The main reason was identified that storage drive is full therefore the services got hanged but after looking at BlobCache settings I figure out the drive space is less than the BlobCache maximum size.

The services are back after fixing the BlobCache size issue:

Web.config

Note: You need to pass number in GBs for maxSize.

<BlobCache location=”E:\BlobCache” path=”\.(gif|jpg|jpeg|jpe|jfif|bmp|dib|tif|tiff|themedbmp|themedcss|themedgif|themedjpg|themedpng|ico|png|wdp|hdp|css|js|asf|avi|flv|m4v|mov|mp3|mp4|mpeg|mpg|rm|rmvb|wma|wmv|ogg|ogv|oga|webm|xap)$” maxSize=”10″ enabled=”true” />