System server requirements

System hardware requirements
	CPU	File I/O	Database I/O	RAM
Management Web App	High	Low	High	Mid
Scoring Web App	Low	Low to Mid	Mid	Mid
Workers	High	High	Mid	High
PostgreSQL	Mid	High	N/A	High
DWH	N/A	N/A	High	N/A
ETL	High	Low to Mid	Mid	High
CRM	Mid	Low	Mid	Mid
Analytics Engine	High	Low	Mid	High
System Server Requirements
	File Server	Database Server	Web Server	Processing Server
Functionalities	SFTP, NFS	DWH, Operation DB	Web based application, CRM, …	Workers, ETL, Analysis Engine, …
CPU	Low (E3-1230v2 or existing)	Mid to High (E5-2420 dual / E52620 dual)	Mid (E3-1230v2/existing server)	High (E3-1230v2/existing server)
RAM	16G or above	32G or above	16G or above	16G or above
RAID	RAID 1/5/6	RAID 10	NO RAID / RAID 1	NO RAID
RAID Controller	Dell H710p or equivalent	Dell H710p or equivalent	N/A	N/A
HDD	TBD	1TB x 4	500GB	500GB
Quantity	x1	x1	xN	xN
Public IPs	x1	N/A	x2	N/A
Region	All	All	All	All
Scalability	Add drive for increase storage capacity.  Can add new server as required.	Single server can support up to 3 to 5 years.  Can add new server as required.	Scale Horizontally by adding new server as required.	Scale Horizontally by adding new server as required.
New Server Price	20K (Dell R220) to 40K (Dell R520)	50K+ HKD (Dell R520/R720)	12K HKD (Dell R220)	12K HKD (Dell R220)
Servers Allocation
Live site
	File Server	Database Server	Web Server	Processing Server
	New server Dell R220/R520	New server Dell R520/R720	HK
	20K/40K+ HKD - Stage 2+	50K+ HKD - Stage 2	existing server #1 - Management
		Support both all regions	existing server #2 - Scoring
		Database for Management, Scoring, Worker, DWH, etc.	Dell R210 - Workers, ETL, SFTP
			UK
			existing #3 - Management
			existing #4 - Scoring
	=R220, R210 #2 in Stage 1	= existing servers, R210 and R220 servers in Stage 1	Dell R220 #2 (12K HKD - Stage 1) - Worker, SFTP	=R210, R220 #2 in Stage 1
Standby site
	File Server	Database Server	Web Server	Processing Server
	New server Dell R220 RAID 1	New server Dell R220 with RAID 1	HK
	~20K HKD - Stage 3	(* Use low to mid-range standby server)	R220 #3 (12K HKD - Stage 1.5) - Management, Scoring, SFTP, …
		~20K HKD - Stage 3	1 x VM #1 (2K HKD - Stage 1.5) Worker
			UK
			R220 #3 (12K HKD - Stage 1.5) - Management, Scoring, SFTP, …
	=R220 #3, R220 #4, VM #1, VM #2 in Stage 1.5	=R220 #3, R220 #4, VM #1, VM #2 in Stage 1.5	1 x VM #2 (2K HKD - Stage 1.5) Worker	=VM #1, VM #2 in Stage 1.5