IBM Ceph TCO Calculator
IBM Internal Use Only!
Basic Inputs
Customer Name
Usable Capacity
TB
Expected Growth
%
Expected Lifecycle
years
Use Case
Storage Details
Server-Model
Additional Specs
Disk Media
For object storage use-cases use HDD. For file or block use-cases with low latency requirements it's generally better to use Flash Storage (SSD). If you cannot change the disk media type here, then this particular server model is only available with one media configuration.
Storage Layout
For object storage use-cases, Erasure Coding is preselected and recommended as this will result in a better TCO. For file or block based use-cases Replica 3 should be selected because it will give you better performance.
Minimum node requirements: EC2+2 => 4, EC4+2 => 7, EC8+3 => 12, EC8+4 => 13, Replica 3 => 4, Replica 2 (all-flash) => 3 nodes. This tool will automatically pick the correct amount of nodes for a particular DP-Layout.
Per Node Capacities
Advanced Storage Settings
Select Data-Disk
Generally for larger overall usable capacities, you want to use larger capacity disk drives as it will overall result in a better TCO. However this will also depend on the Data Protection Layout and the minimum amount of nodes required for a particular DP-Layout.
Data-Disks per Server
Select Metadata-Disks
Ceph needs to store metadata in addition to the actual user-data. For HDD-based configurations, metadata should be stored on faster media (SSD). For configurations where the data disks are flash-based, metadata can also be stored on the data-disks directly but will consume additional space (up to the percentage specified in "Metadata Size").
Metadata-Disks per Server
Metadata Size
Percentage of allocated dataspace for Write Ahead Logs, RocksDB, Object indexes, etc. Recommendation: 4% for object storage use-cases, 2% for other use-cases
(% of data)
Compression
Achievable compression rate. This is used to calculate usable space which in return affects required raw space. If you want to be on the safe side, set this to 0%
%
Software Options
Software License Type
Subscriptions are fees paid for a committed period or upfront for the planned lifespan of a deployment.
Perpetual Licenses are paid once initally followed by yearly support renewals.
OS Included
By default IBM Storage Ceph licenses will include 1 RHEL operating system subscription for every 40TB of raw storage to be used for the storage deployment. There is also a Ceph license available without RHEL which will be roughly 10% cheaper.
Discount Details
Apply your vendor discounts here to get a realistic TCO report.
Software
Hardware
Discount
Maintenance Discount
TCO Options
select/unselect all
Show Inventory
Calculate Electricity Costs
Calculate Cooling & Lights
Calculate Admin Costs
Calculate Carbon Emission Costs
Calculate Drive Replacement Costs
Data Center Rental Costs
Advanced TCO Settings
Cost of Electricity
$
Cooling & Light rate
(% of power)
Labor Cost Administration
$
per year, fulltime Storage Admin
Capacity per Admin
TB
Carbon Emissions
g/kWh
Carbon Emissions Costs
$
/GT
Annual HW-Maintenance Fee
% of System Price
Annual Failure Rate HDDs
%
Annual Failure Rate SSDs
%
Repair Costs (labor)
$
/per disk
Data Center Rental Costs
$
/m2/month
TCO Report
Costs for usable capacity:
Fully burdened costs with all running costs included but before taxes and depreciation.
xyz
$
/yr
Total costs:
xyz
$
Change Disk Size
disk selected
TCO Comparison
Your current storage costs
Enter the fully burdened costs for your current storage solution here. If you don't know that, here is where to start:
$
900 - 1200 for All-flash Arrays
$
600 - 900 for Enterprise NAS
$
250 - 500 for Object Storage
All of the above are per TB usable and per year
$ per TB/year
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