Debian 8.6 - Large file at root called EMPTY

Recently I've been doing some maintenance on a cloud-hosted server I run. My host is DreamHost, specifically their DreamCompute service and the server is running Debian 8.6. While cleaning up old files, I found a rather suspicious file located in / called EMPTY with a size of 3.3 GB. @ / % ls -alh total 3.3G drwxr-xr-x 22 root root 4.0K Sep 23 11:31 . drwxr-xr-x 22 root root 4.0K Sep 23 11:31 .. drwxrwxr-x 2 root root 4.0K Sep 23 11:20 bin drwxr-xr-x 3 root root 4.0K Sep 23 11:20 boot -rw-r--r-- 1 root root 30 Aug 24 08:30 config drwxr-xr-x 18 root root 3.0K Sep 23 11:31 dev -rw-r--r-- 1 root root 3.3G Mar 16 2016 EMPTY /boot/initrd.img-4.4.0-0.bpo.1-amd64 lrwxrwxrwx 1 root root 36 Mar 16 2016 initrd.img.old -> /boot/initrd.img-4.3.0-0.bpo.1-amd64 drwxr-xr-x 15 root root 4.0K Mar 16 2016 lib drwxr-xr-x 2 root root 4.0K Sep 23 11:20 lib64 drwx------ 2 root root 16K Mar 16 2016 lost+found drwxr-xr-x 3 root root 4.0K Mar 16 2016 media drwxr-xr-x 2 root root 4.0K Mar 16 2016 mnt drwxr-xr-x 6 root root 4.0K Jun 29 09:59 opt dr-xr-xr-x 157 root root 0 Sep 23 11:31 proc drwx------ 11 root root 4.0K Sep 23 21:18 root drwxr-xr-x 24 root root 820 Sep 24 06:25 run drwxr-xr-x 2 root root 4.0K Sep 23 11:20 sbin drwxr-xr-x 2 root root 4.0K Mar 16 2016 srv dr-xr-xr-x 13 root root 0 Sep 26 16:52 sys drwxrwxrwt 13 root root 4.0K Sep 26 16:51 tmp drwxr-xr-x 11 root root 4.0K Apr 16 09:38 usr drwxr-xr-x 12 root root 4.0K Jun 9 09:26 var lrwxrwxrwx 1 root root 32 Apr 11 13:37 vmlinuz -> boot/vmlinuz-4.4.0-0.bpo.1-amd64 lrwxrwxrwx 1 root root 32 Mar 16 2016 vmlinuz.old -> boot/vmlinuz-4.3.0-0.bpo.1-amd64 I attempted to use sed -n '/\S/ p' < EMPTY to check if the file really was empty of everything except whitespace and it didn't print any output. I then did sed '/\S/ p' < EMPTY && echo "$?" to make sure the command didn't crash part way through and it returned 0. I just want to confirm, though. Is this file safe to delete?