Overview

1: Server Types
2: ServiceWatch Metrics

Service Overview

Scalable DB(DBaaS) is a database service designed to efficiently manage rapidly increasing data processing demands and user load.
Scalable DB (DBaaS) automatically scales resources up or down in response to traffic changes, maintaining optimal performance and availability. This maximizes resource efficiency and provides cost savings. Additionally, the Proxy Endpoint configuration feature not only distributes database load by separating read/write and read‑only roles, but also enables more efficient independent connection management per application. By combining these features, users can reduce the complexity of service operations and build a cost‑effective, scalable database environment.

Service Diagram

Provided features

Scalable DB(DBaaS) provides the following features.

Auto Provisioning: Allows installation and configuration of the Database (DB) via UI, and provides an Active‑standby redundancy configuration built on storage replication. In case of an Active server failure, it automatically fails over to the Standby.
Operation Control Management: Provides functionality to control the status of running servers. Offers start and stop functions for the entire cluster and restart buttons for each node, supporting a flexible cluster and node management environment for users.
Scaling feature: Through the automatic scaling feature, read nodes are automatically expanded and contracted according to the policy set by the user. Additionally, users can manually adjust the number of nodes as needed.
Proxy Endpoint configuration: By using the Proxy Endpoint feature that separates read/write and read‑only connections, it supports database connection optimization and traffic distribution.
Backup: Provides data backup functionality based on its own backup command. Users can set the backup time window and storage repository, and additional fees are incurred based on backup size.
Read Node status view: Provides real-time Read Node status view functionality, allowing monitoring of replication lag time (Replication Lag Time) to accurately determine data synchronization status.
Service Status Query: Retrieves the final status of the current DB service.
Monitoring: CPU, memory, performance monitoring information can be viewed through Servicewatch.

Component

Scalable DB (DBaaS) provides pre‑validated engine versions and various server types in accordance with its open‑source support policy. Users can select and use them based on the scale of the service they wish to configure.

Engine version

The engine versions supported by Scalable DB (DBaaS) are as follows.

Technical support can be used until the supplier’s EoTS (End of Technical Service) date, and the EOS date when new creation is stopped is set to six months before the EoTS date.

The EOS and EoTS dates may change according to the supplier’s policy, so please refer to the supplier’s license management policy page for details.

MariaDB(Commuity): https://mariadb.org/about/#maintenance-policy

Provided version	EOS Date (Samsung Cloud Platform new creation stop date)	EoTS Date (Community technical support end date)
10.11.13	2027-06 (planned)	2028-02-16

Table. Engine versions provided by Scalable DB(DBaaS)

Server Type

The server types supported by Scalable DB(DBaaS) are as follows.

For detailed information about the server types provided by Scalable DB (DBaaS), refer to Scalable DB(DBaaS) Server Types.

High Capacity sdbh2v24m48

Category	example	Detailed description
Server type	High Capacity	Provided server type classification
Server specifications	sdbh2	Provided server type classification and generation sdbh: h indicates a high-capacity server specification, and 2 indicates the generation
Server specifications	v24	Number of vCores v24: 24 virtual cores
Server specifications	m48	Memory Capacity m48: 48GB Memory

Table. Scalable DB(DBaaS) server type components

Provision status by region

Scalable DB(DBaaS) is available in the following environments.

region	Provision status
Korea West (kr-west1)	Provide
Korea East (kr-east1)	Not provided
South Korea 1 (kr-south1)	Provide
South Korea South 2 (kr-south2)	Not provided
South Korea 3 (kr-south3)	Not provided

Table. Scalable DB(DBaaS) availability by region

Preliminary Service

This is a list of services that must be pre-configured before creating the service. Please refer to the guide provided for each service and prepare in advance.

Service Category	service	Detailed description
Networking	VPC	A service that provides an isolated virtual network in a cloud environment

Table. Scalable DB(DBaaS) required services

1 - Server Types

Scalable DB(DBaaS) server type

Scalable DB (DBaaS) offers server types configured with various combinations of CPU, memory, and network bandwidth. When creating a Scalable DB(DBaaS), the Database Engine is installed according to the server type selected for the intended use.

The server types supported by Scalable DB (DBaaS) are as follows.

High Capacity sdbh2v24m48

Category	example	Detailed description
Server type	High Capacity	Provided server type classification
Server specifications	sdbh2	Provided server type classification and generation sdbh: h indicates a high-capacity server specification, and 2 indicates the generation
Server specifications	v24	Number of vCores v24: 24 virtual cores
Server specifications	m48	Memory Capacity m48: 48GB Memory

Table. Scalable DB (DBaaS) server type format

sdbh2 server type

The dbh2 server type of Scalable DB (DBaaS) is offered with high-capacity server specifications and is suitable for database workloads that require large-scale data processing.

Intel 4th‑generation (Sapphire Rapids) Xeon Gold 6448H Processor up to 3.2 GHz
Supports up to 128 vCPUs and 1,536 GB of memory
Networking speed up to 25 Gbps

Category	Server type	vCPU	Memory	Network Bandwidth
High Capacity	sdbh2v24m48	24 vCore	48 GB	Maximum 25 Gbps
High Capacity	sdbh2v24m96	24 vCore	96 GB	Maximum 25 Gbps
High Capacity	sdbh2v24m192	24 vCore	192 GB	Maximum 25 Gbps
High Capacity	sdbh2v24m288	24 vCore	288 GB	Maximum 25 Gbps
High Capacity	sdbh2v32m64	32 vCore	64 GB	Maximum 25 Gbps
High Capacity	sdbh2v32m128	32 vCore	128 GB	Maximum 25 Gbps
High Capacity	sdbh2v32m256	32 vCore	256 GB	Maximum 25 Gbps
High Capacity	sdbh2v32m384	32 vCore	384 GB	Maximum 25 Gbps
High Capacity	sdbh2v48m192	48 vCore	192 GB	Maximum 25 Gbps
High Capacity	sdbh2v48m576	48 vCore	576 GB	Maximum 25 Gbps
High Capacity	sdbh2v64m256	64 vCore	256 GB	Up to 25 Gbps
High Capacity	sdbh2v64m768	64 vCore	768 GB	Maximum 25 Gbps
High Capacity	sdbh2v72m288	72 vCore	288 GB	Maximum 25 Gbps
High Capacity	sdbh2v72m864	72 vCore	864 GB	Maximum 25 Gbps
High Capacity	sdbh2v96m384	96 vCore	384 GB	Up to 25 Gbps
High Capacity	sdbh2v96m1152	96 vCore	1152 GB	Maximum 25 Gbps
High Capacity	sdbh2v128m512	128 vCore	512 GB	Maximum 25 Gbps
High Capacity	sdbh2v128m1536	128 vCore	1536 GB	Maximum 25 Gbps

Table. Scalable DB(DBaaS) server type specifications - sdbh2 server type

2 - ServiceWatch Metrics

Scalable DB sends metrics to ServiceWatch. The metrics provided by default monitoring are data collected at a 1‑minute interval.

Reference

For instructions on how to view metrics in ServiceWatch, refer to the ServiceWatch guide.

Basic Metrics

The following are the basic metrics for the namespace Scalable DB(DBaaS).

The indicators whose names are shown in bold below are the indicators selected as major indicators among the basic indicators provided by Scalable DB(DBaaS). Key metrics are used to build service dashboards that are automatically created for each service in ServiceWatch.

Each metric indicates through the user guide which statistical value is meaningful when viewing that metric, and among the meaningful statistics, the values displayed in bold are the primary statistics. In the service dashboard, you can view key metrics using these primary statistical values.

OS Basic Metrics

Category	Performance items	unit	Detailed description	meaningful statistics
CPU	CPU Usage	Percent	CPU usage	Maximum
Disk	Disk Usage	Percent	Disk usage	Maximum
Disk	Disk Write Bytes	Bytes/Second	Write bandwidth (bytes/second) on block device	average maximum minimum
Disk	Disk Read Bytes	Bytes/Second	Read capacity (bytes/second) from block device	average maximum minimum
Disk	Disk Write Requests	Count/Second	Number of write requests on block device (requests per second)	average maximum minimum
Disk	Disk Read Requests	Count/Second	Number of read requests on block device (requests per second)	average maximum minimum
Disk	Average Disk I/O Queue Size	None	Average queue length of requests issued to the block device	average maximum minimum
Disk	Disk I/O Utilization	Percent	Proportion of time the block device actually handled I/O operations	average maximum minimum
Memory	Memory Usage	Percent	Memory usage	maximum
Network	Network In Bytes	Bytes/Second	Received capacity (bytes/second) on the network interface	Average Maximum Minimum
Network	Network Out Bytes	Bytes/Second	Transmitted capacity (bytes/second) on the network interface	average maximum minimum
Network	TCP Connections	Count/Second	Current total number of successfully established TCP connections	average maximum minimum
Network	Network In Packets	Count	Number of packets received on the network interface	average maximum minimum
Network	Network Out Packets	Count	Number of packets transmitted on the network interface	average maximum minimum
Network	Network In Dropped	Count	Number of packet drops received on the network interface	average maximum minimum
Network	Network Out Dropped	Count	Number of packet drops transmitted on the network interface	average maximum minimum
Network	Network In Errors	Count	Number of packet errors received on the network interface	average maximum minimum
Network	Network Out Errors	Count	Number of packet errors transmitted on the network interface	average maximum minimum

Table. OS basic metrics

Scalable DB Basic Metrics

Category	Performance items	unit	Detailed description	meaningful statistics
Activelock	Active locks	Count	Number of transactions in lock wait (Lock Wait) state for 1 minute (60 seconds) or longer in the InnoDB storage engine	Total Average Maximum Minimum
Activesession	Active sessions	Count	Number of active sessions	Total Average Maximum Minimum
Activesession	Connection usage	Percent	DB connection session usage rate	Total Average Maximum Minimum
Activesession	Connections	Count	DB connection session	Total Average Maximum Minimum
Activesession	Aborted Connections	Count/Minute	Number of abnormal terminated connections	Total Average Maximum Minimum
Datafile	Current open files	Count	Number of file descriptors opened by the DB	Total Average Maximum Minimum
Datafile	Max open files	Count	Maximum number of file descriptors the DB can open	Total Average Maximum Minimum
Datafile	Open files usage	Percent	DB file maximum count utilization	Total Average Maximum Minimum
InnoDB	InnoDB buffer pool hit ratio	Percent	The proportion of data read directly from memory without accessing the disk	Total Average Maximum Minimum
InnoDB	Innodb row lock wait transactions	Count	Current number of InnoDB transactions waiting for a row lock	Total Average Maximum Minimum
InnoDB	InnoDB row lock time	Milliseconds	Total time waited due to InnoDB row locks (in milliseconds)	Total Average Maximum Minimum
InnoDB	InnoDB deadlocks	Count/Minute	Number of transactions rolled back due to deadlock	Total Average Maximum Minimum
InnoDB	Table lock waits	Count/Minute	Number of waits that occurred to acquire a table lock	Total Average Maximum Minimum
InnoDB	Temp disk tables	Count/Minute	Number of Temp Tables created on disk	Total Average Maximum Minimum
InnoDB	Innodb log waits	Count	Number of times waited to write the redo log to disk	Total Average Maximum Minimum
ProxySQL	Proxy Uptime	Seconds	Express the proxy’s uptime in seconds	Total Average Maximum Minimum
ProxySQL	Backend connections(CONNECTED)	Count	Number of sessions connected to the Proxy server	Total Average Maximum Minimum
ProxySQL	Client connections connected	Count	Number of client sessions currently connected to the proxy	Total Average Maximum Minimum
ProxySQL	Queries routed	Count	Number of queries routed to the backend server	Total Average Maximum Minimum
ProxySQL	Backend connections(ACTIVE, IDLE)	Count	Active / idle connection count per endpoint	Total Average Maximum Minimum
ProxySQL	Backend server status	None	Backend server status 1 - Online 2- SHUNNED 3 - OFFLINE_SOFT 4 - OFFLINE_HARD 5 - SHUNNED_REPLICATION_LAG	Total Average Maximum Minimum
ProxySQL	Backend conneciton check	Count	Backend server connection success/failure count	-
State	Instance state	None	Check Scalable DB status up/down 1 - Up 0 - Down	-
State	Slave behind master seconds	Seconds	Replica latency (unit: seconds)	Total Average Maximum Minimum
State	Slave io thread running (Replica Only)	None	I/O Thread status 1 - Running 0 - Down	-
State	Slave SQL thread running (Replica Only)	None	SQL Thread status 1 - Running 0 - Down	-
Tablespace	Tablespace used	Megabytes	Tablespace usage	Total Average Maximum Minimum
Tablespace	Tablespace used(TOTAL)	Megabytes	Tablespace usage (total)	Total Average Maximum Minimum
Transactions	Slow queries	Count	Number of queries running longer than 10 seconds	Total Average Maximum Minimum
Transactions	Long transaction time	Seconds	Long Transaction time	Total Average Maximum Minimum
Transactions	Wait locks	Count	Number of sessions waiting for lock	Total Average Maximum Minimum
Transactions	SQL Queries/Minute	Count/Minute	Queries executed per minute	Total Average Maximum Minimum

Table. Scalable DB basic metrics