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Remote PC Array Case Study

Saga Prefecture Saga City Hall

Building a 200-user telework environment
with minimal time using Soliton SecureDesktop
while reducing installation costs and saving space with
"Remote PC Array"sales@atrustcorp.com | www.atrustcorp.com| +886 3 328 8837

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Revamping municipality information security
measures and establishing a telework environment
using dedicated terminals
Saga City is the capital of Saga Prefecture and an economic andgovernmental center with the largest population in the prefecture. Thecity is wide from north to south, with the southern part facing theAriake Sea, the southeastern par t bordering Okawa Cit y andYanagawa City in Fukuoka Prefecture across the Chikugo River, andthe northeastern part bordering Fukuoka City in Fukuoka Prefectureand Itoshima City along the Sefuri Mountains. The city is home to awealth of historical and cultural heritage, including the ruins of theMietsu Naval Dock, which was registered as a World Heritage Site in2015, and is also blessed with a rich natural environment that includes
mountain forests in the foothills of the Sefuri Mountains, clear
streams, and the Ariake Sea, Japan's largest tidal flat with a uniquebiota. It is also well-known as a city of hot air balloons, holding the"Saga International Balloon Festa" in autumn mainly on the banks ofthe Kase River.
Saga City Hall built a network environment with "3-tier security
measures" consisting of the My Number Usage Administration System(Basic Resident Ledger Network), LGWAN Connection System(General Administration Network), and Internet Connection System,
based on the 2015 Notification of the Minister of Internal Affairs andCommunic ations regarding the "radic al enhanc ement of newmunicipal information securit y measures," and enhanced theinformation security measures of the city hall which were put in placein 2017.
In parallel with these efforts, Saga City Hall also began building atelework environment for their staff using Soliton SecureDesktop, andlaunched a trial telework program with five users in the same year,
gradually increasing the number of users to more than ten as they
accumulated their knowledge pool.
However, with the rapid spread of covid from April 2020, Saga City
Hall has had to increasingly restrict employees from coming to work,and the need to implement telework, which allows employees to workfrom home using their PCs as they do in the government office, grewsuddenly. Saga City Hall therefore decided to build the necessary
number of telework environments by the end of fiscal 2020, and asked
related companies for system proposals.

Scaling from 10+ users to 200 users based on existing
telework environment

Saga City Hall, Digital Promotion
Section, Chief

Hideyuki Yasumoto

Profile of municipality
Name of municipality:
Saga Prefecture Saga City Hall
Address:
Sakae-cho, Saga-shi, Saga PrefecturePopulation:
230,853（As of May 31, 2021)
Located in the middle-eastern part ofSaga Prefecture, Saga City is the capital of
the prefecture and also its economic andadministrative center. Merged w ithneighboring towns and villages in 2005
and 2007, Saga City is surrounded by
mountains and forests of the Sef uri
mountain range, crystal clear streams,
creeks and rice ﬁelds in the Saga Plain,
and the Ariake Sea, called a sea of richresources. As its people and communities
continue to demonstrate their uniquenessand charm, Saga City strives to realize its
future vision "SAGA, a city abundant innature and glowing with children's smiles.
https://www.city.saga.lg.jp/

In June 2020, Saga City Hall launched a study on a new teleworkenvironments with the aim of running them from FY2021. Hideyuki
Yasumoto, chief of the Digital Promotion Section at Saga City Hall,t alks about the system proposals he requested f rom relatedcompanies.

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Your Reliable Cloud Computing Partner"In building the new telework environment this time, we set as our first priority the construction of asecurity environment based on the "three-tier security measures" that we implemented in 2017. Inaddition, we set the scale of telework to 200 users using a total of 200 terminals (180 in regular use +20 spares). This figure--200 users--is based on the situation of restricted work attendance that wasimplemented to fight the covid pandemic. About 20% of the staff, excluding those who work at thecounter or do not normally use PCs, were subjected to restricted work attendance. After analyzing
the results from various angles, we found that we would need 200 PCs, including spares. However,in the six months from the time we started reviewing this endeavor to the time we started preparing
for this, we needed to scale up from 10 or so users to a 200-user telework environment. One key
factor that made this possible was the adoption of 'Remote PC Arrays'."

Improving space efficiency and controllability of connected PCs
Even reduced costs and minimal performance failures caused by loadinterference

Saga City Hall, Digital
Promotion Section, Chief
Hideyuki Yasumoto

One of the major challenges in establishing the telework environment thistime involved the location of installing the PCs used by the 200 users.
The existing operation system, Soliton Systems Soliton SecureDesktop,
is a remote desktop system that provides a "one-to-one" relationshipbetween the PC being brought out for telework and the PC being
connected to. The telework environment built this time is also based on
the same remote desktop method, which means that the PC to beconnected to will be installed in a specific location. Since the number ofPCs connected to the existing telework system can sometimes be as
many as 10 or more, until now they were set up in a server room in thecity hall. But this time, suddenly as many as 200 PCs were needed all atonce. This meant the need to secure a space to set up the PC andaddress maintenance and management issues. The solution proposed
was the use of a "remote PC array."

Keisuke Nakashima, sub manager of Saga Densan Center CO., LTD.,
Public Business Division, System 3 Department, System 2 Group who proposed the teleworkenvironment system and was in charge of the actual construction says "The "Remote PC Array 100"
installed this time can accommodate 20 physical PC cartridges in a 1U enclosure, allowing us toinstall ten 1U enclosures in a rack to accommodate 200 users. If the goal is simply to consolidate
PCs, one way to do this would be to construct the required number of terminals on the virtual system.
But this would require multiple software packages for the system, which would be costly, complicatedto maintain and manage, and take a long time to build. In this respect, "Remote PC Array" canprovide PC cartridges such as CPU, memory, and storage, as well as components such as network
switches and management software, all-in-one, ensuring easy maintenance and management, as
well as construction in a single period of time. In addition, since one PC cartridge per user isallocated for physical access, this reduces factors that can cause performance problems, such asload interference from other users.”

New telework environment begins operation in April 2021.
Analyzing the usage status of each department for future scaling
In addition, based on the three-tier security measures unique to municipalities, Saga City Hall
needed to keep the current system environment as unchanged as possible in building this teleworkenvironment. Yasumoto says this about these security measures.
"Like with existing telework environments, the dedicated terminal to be used this time employs asales@atrustcorp.com | www.atrustcorp.com| +886 3 328 8837

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screen transfer method that compresses and encrypts only the screen of the PC to be connected, sono data remains on the terminal for telework (the PC to be brought out). That way, there is no needto worry about information leakage in the event of a terminal malfunction.
Yasumoto and the other members of the Digital Promotion Section worked to familiarize the entire
city hall staff with the features of the telework environment built, including these security measures,in preparation to begin running it. Departments which mainly worked at the counter to provide
resident services, etc., and rarely carried out telework were informed that they could use thetelework environment for short web conferences. The system related to the telework environment
was installed between November 2020 and February 2021. In the latter half of February, the systemwas test-run for a week or two to check details of the actual operation, such as operability of theterminals and stress of the network connection.
The telework environment, which started operations on a full-scale in the third week of April, hasbeen running smoothly ever since without any trouble so far. Currently, the city hall is distributing twoterminals per department to encourage teleworking on a trial basis. We have received positive
feedback from our employees with comments like "it works better than I expected" and "I canconcentrate better with telework." (Yasumoto)
The Digital Promotion Section is compiling these reports on usage from each department and isworking to prepare the telework environment for the future.
"We are tallying and analyzing the usage results (i.e. "xx section is using it for web conferencing
from 0:00 to 0:00 on October xx"." Based on how each department is using the system and what
their needs are, we plan to analyze future demands, i.e. what department needs how many
terminals, and further expand the system while supporting the current use of telework. (Yasumoto)

System conceptual diagram
Internal System

Saga City HallGroupware

Document
control
Financialaccounting

Telework system

Remote PC Array

Soliton SecureDesktop

RemoteoperationsInternet

Screentransfer

EmployeepayrollBring out PC

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