Disaster Recovery site for Learnexa

DR: MultiSite

Notes:
* Costs slated to be reduced by 15% - Opsource * * Expected 20-30$ savings monthly, if signed up for a new account *

HW	State	Role	Cost	Monthly - OpSource	Monthly - AWS	Diff
2 VM's @ 4cores, 8G, 50G	OFF (ON for code refresh)	App	for 1, 0.040004 CPU 0.02500 8 RAM 0.00030*50	10.98+10.98+ (~20)	2	–
M: 4cores, 8G,50G	ON	DB	same unit price	259.2+10.98	168.36 + 2	7G vs 8G RAM i.e. 1G less RAM. 223.26 for 4C, 15G
S: 4cores, 8G 50G	OFF (BI-WEEKLY ON OR MINIMAL HW ON*)	DB	(24hours/month)	3.84+4.8+10.98	5.52+2
6cores, 16G, 50G	OFF (BI-WEEKLY ON)	Collab	(24hours /month)	5.76+9.6+10.98	10.08+2
2cores, 2G, 10	ON	LB		57.6+36+2.16	76.86+0

App Role: Only 1 server, 1G less RAM.
DB Role: Only DB Master, 4 less cores and 5G less RAM.
Collab Role: 2 less cores and 9G less RAM. Workload shared with CloudFront service.
LB/Chat Role: 1.7G more RAM.
Backup: 1st level as a Snapshot. 2nd level in S3. 3rd level can be added to Glacier.
Bandwidth: Estimated.
Caching: Added 5G for application caching. TBD.
DB Perf: Added (500 IOPS) to DB drive for better disk performance.
Link to AWS calc: Tinker with AWS Calc
Link to Opsource calc: Tinker with Opsource Calc
All AWS costs are on-demand. Reserved Instance prices are 50-65% lower.

Current HW (OP)	Role	Cost	Monthly	AWS equivalent (upper)
2 VM's @ 4cores, 8G, 10+50G	App	for 1, 0.040004 CPU 0.02500 8 RAM 0.00030*50	117.12+146.40+10.98=274.50*	for 1, 4core,15G,SSD2x40 @204.96+
M: 8cores, 12G,10+150G S: 4cores, 8G 10+150G	DB	same unit price	486.78* + 274.50*	M: 8core,15G,SSD2x80 @ 307.44+ S:4core,7G,SSD2x40 @153.72
6cores, 16G, 10+100G	Collab	same unit price	490.44*	8core,15G,SSD2x80 @ 307.44+ or 8core,30G,SSD2x80 @ 409.92+
2cores, 2G, 10+20G	LB	same unit price	99.55*	2core,3.7G, SSD 2×16 @76.86+
* Core Unit breakdown. Priced per unit (ex: 0.04 for 1 unit of CPU i.e. 1 core, 0.025 for 1 unit of RAM i.e. 1G etc.)
+ Does not include EBS persistent storage cost, scroll below

Service Config	Monthly Cost	Notes
EBS Volumes	15.50	EBS backed storage,db, shared
Inter-Region Data Transfer Out	0.10	5G, dynamic content - TBD
Data Transfer Out	1	10G
Data Transfer In	0	20G
S3 Storage	0.30	10G
S3 Put Request	0.05	10000 req/month
S3 Other Requests	0.01	10000 req/month
S3 Inter-Region Data Transfer Out	0.20	10G / month
Cloudfront	0.82	5GB/month, 35% US, 5% EUR, 60% INDIA
Total	17.98

Service Config	Monthly Cost	Notes
EBS Volumes	15.50	100GB for DB 60GB for shared
EBS Volumes - IOPS	50	500 IOPS for DB
EBS Volumes - Snapshot	6.65	10GB / month for DB 60 GB / month for shared
Additional IPs	3.66	-
Inter-Region Data Transfer Out	0.10	5G, dynamic content - TBD
Data Transfer Out	8.28	20G
Data Transfer In	0	20G
S3 Storage	3	100G shared between 2nd level DB Backups, Shared assets
S3 Put Request	0.05	10000 req/month
S3 Other Requests	0.01	10000 req/month
S3 Inter-Region Data Transfer Out	0.20	10G / month
Cloudfront	1.32	10GB/month, 90% US, 5% EUR, 5% INDIA
Glacier Storage	1	Optional, if using S3 100G, 10000 Req
Glacier Retrieval	17.70	Optional, if using S3 4 Hour retrieval. Estimated latest copy 10G 100G, 10000 Req
Total	107.47

Rackspace pricing for CDN:

Type	Price	Tier
RS-Storage	0.100	per GB upto 1TB
RS-CDN	0.120	per GB upto 10TB
AWS-Storage	0.0300	per GB upto 1TB
AWS-CDN	0.120	per GB upto 10TB
RS-Total	1+1.2=2.20	per 10G
AWS-Total	0.3+1.2=1.50	per 10G (does not include edge location,request charges)