Table of Contents

Disaster Recovery site for Learnexa

DR: MultiSite

OpSource Estimated Monthly Prod Cost: $462.06

OpSource Estimated Monthly Prod Cost DR Activated: $2.186 / hr

AWS Estimated Monthly Prod Cost: $263.82*

AWS Estimated Monthly Prod Cost DR Activated: $1.45 / hr

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

HWState Role Cost Monthly - OpSource Monthly - AWS Diff
2 VM's @ 4cores, 8G, 50G OFF (ON for code refresh) App for 1, 0.04000*4 CPU
0.02500 * 8 RAM
0.00030*50
10.98+10.98+ (~20) 2
M: 4cores, 8G,50GON 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, 50GOFF (BI-WEEKLY ON) Collab (24hours /month) 5.76+9.6+10.98 10.08+2
2cores, 2G, 10ONLB 57.6+36+2.16 76.86+0

DR: MultiVendor

Estimated Monthly Startup Cost: $556.55

Estimated Monthly Prod Cost: $1260.37

Differences compared to Opsource

  1. App Role: Only 1 server, 1G less RAM.
  2. DB Role: Only DB Master, 4 less cores and 5G less RAM.
  3. Collab Role: 2 less cores and 9G less RAM. Workload shared with CloudFront service.
  4. LB/Chat Role: 1.7G more RAM.
  5. Backup: 1st level as a Snapshot. 2nd level in S3. 3rd level can be added to Glacier.
  6. Bandwidth: Estimated.
  7. Caching: Added 5G for application caching. TBD.
  8. DB Perf: Added (500 IOPS) to DB drive for better disk performance.
  9. Link to AWS calc: Tinker with AWS Calc
  10. Link to Opsource calc: Tinker with Opsource Calc
  11. 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, 0.04000*4 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+100GCollab same unit price 490.44* 8core,15G,SSD2x80 @ 307.44+ or 8core,30G,SSD2x80 @ 409.92+
2cores, 2G, 10+20GLB 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
HW Config Role Cost Monthly
2Cores, 3.7G, SSD 2×16 App 0.105 76.86
2Cores, 3.7G, SSD 2×16 App 0.105 76.86
M: 2Cores, 3.7G, SSD 2×16
S:2Cores, 3.7G, SSD 2×16
DBM & DBS 0.105 153.72
4Cores, 7G, SSD 2×40 Collab 0.210 153.72
2Cores, 3.7G, SSD 2×16 LB / Chat 0.105 76.86
Total538.02
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 Request0.05 10000 req/month
S3 Other Requests0.01 10000 req/month
S3 Inter-Region Data Transfer Out0.2010G / month
Cloudfront 0.82 5GB/month, 35% US, 5% EUR, 60% INDIA
Total17.98

Prod

HW Config Role Cost Reserved Cost Monthly
4Cores, 7G, SSD 2×40 App 0.210 0.084 153.72
4Cores, 7G, SSD 2×40 App 0.210 0.084 153.72
8core,15G,SSD2x80
S: 4Cores, 7G, SSD 2×40
DBM + DBS 0.420 + 0.210 0.084 307.44 + 153.72
8core,15G,SSD2x80 Collab 0.210 0.420307.44
2Cores, 3.7G, SSD 2×16 LB / Chat 0.105 0.04176.86
Total1152.9
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 Request0.05 10000 req/month
S3 Other Requests0.01 10000 req/month
S3 Inter-Region Data Transfer Out0.2010G / month
Cloudfront1.32 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
Total107.47

Rackspace pricing for CDN:

TypePriceTier
RS-Storage0.100 per GB upto 1TB
RS-CDN0.120 per GB upto 10TB
AWS-Storage 0.0300 per GB upto 1TB
AWS-CDN0.120 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)