SQL Server FileStream Performance Issue

I have an application which is generating PDFs & inserting it into SQL using file stream.

I am facing performance issue while inserting Filestream data, currently I am able to insert about 7-10 files only per second.

I am using server with configuration of core-2-duo, 4GB RAM, 250GB hard drive, x64 Windows Server 2012 R2 & SQL Server 2012.

Around 1 million file I need to save in DB daily, so I want to finish this as much as possible as fast. My file size are ranging from 7KB - 10MB.

I have also followed many best practices (http://blogs.msdn.com/b/blogdoezequiel/archive/2011/02/11/best-practices-on-filestream-implementations.aspx#.U6BQVpSSz1o) to improve the performance but still I am not able to achieve good performance. I have also tried SQL Server 2014 but it doesn't help.

What else I need to do in order to achieve the faster performance while inserting data?

I can't share more code other than this. Here is the code with which I am inserting file stream data into SQL:

In below logic, the arrStream is of type byte[] (array of byte).

DbCommand objDbCommand = null;

try
{
    SqlDatabase objSqlDatabase = new SqlDatabase("Database ConnectionString");
    objDbCommand = objSqlDatabase.GetStoredProcCommand("Insert FileStream StoredProcedure Name");
    objDbCommand.CommandTimeout = 60;
    objSqlDatabase.AddInParameter(objDbCommand, "@FileName", DbType.String, strFileName);
    objSqlDatabase.AddInParameter(objDbCommand, "@FileStream", DbType.Binary, arrStream);
    objSqlDatabase.AddInParameter(objDbCommand, "@StreamID", DbType.String, strFileStreamID);
    objSqlDatabase.AddParameter(objDbCommand, "@ReturnValue", DbType.Int32, ParameterDirection.ReturnValue, string.Empty, DataRowVersion.Default, 0);
    objSqlDatabase.ExecuteNonQuery(objDbCommand);
    return (Int32)objSqlDatabase.GetParameterValue(objDbCommand, "ReturnValue");
}
catch (Exception ex)
{
    throw;
}
finally
{
    if (objDbCommand.Connection != null)
    {
        objDbCommand.Connection.Close();
        objDbCommand.Connection.Dispose();
    }
}

Below is how I am inserting data into SQL using stored procedure:

CREATE PROCEDURE [dbo].[InsertFileStreamDataToSQL]
(
    @StreamID       UNIQUEIDENTIFIER,
    @FileName       VARCHAR(200),
    @FileStream     VARBINARY(MAX)
)
AS
BEGIN
    INSERT INTO
        [dbo].FilesVault(Stream_id, Name, file_stream) 
    VALUES
        (@StreamID, @FileName, @FileStream)

    RETURN @@ERROR
END
GO

Thanks,
Rajesh Khunt
Blog : http://programmersgeek.wordpress.com/
Twitter : http://twitter.com/#!/r_rajeshkhunt
Linkedin : http://in.linkedin.com/in/rajeshkhunt