A Study of Software Failures and Recovery in the MVS Operating System.

Author(s):  
Paola Velardi ◽  
Ravishankar K. Iyer
2009 ◽  
Vol 4 (1) ◽  
pp. 124-131
Author(s):  
György Hampel ◽  
Zoltán Fabulya ◽  
Elemérné Nagy

It is very important to protect the digitally stored intellectual product in an organization where education and research is the main activity. We have asked our colleagues at the Faculty of Engineering to take part in a survey about data protection. Our findings were: - Only colleagues, who use computers regularly, sent back the questionnaire via email. - The most used operating system is Windows XP Pro. Linux and Windows Vista are only used on a few machines. - The frequency of hardware and software failures (blue screen of death, freezing, virus infection, data loss, etc.) indicate that more frequent maintenance is required. - The data protection provided by the operating system or other software (firewall, virus scanner, etc.) is more commonly used than hardware based protection (ups, hard disk data protection card, etc.) - The autoupdate feature is used to update the software, manual update is not typical. - Nearly all of our colleagues could give a correct estimate of the size of the programmes and documents or other data. So they know how much storage they need to store their files and to make backups. - Two third thinks that he or she can make backup copies and can also restore them. On the other hand most of them do not know whether there is a backup programme installed on the PC (although Windows XP has one). - CD, DVD and USB flash drives are used by half of the colleagues to store backup copies. Some use a separate hard disk or a separate partition for the backup. Almost half of them said that they make copies themselves, but the other half thinks that the backup is made automatically by the programmes or they have no clue at all. - Half of the colleagues think that restoring a complete system from a backup requires more time than installing and setting up all the software. This indicates that the knowledge about backup and restore is mostly theoretic and the computer users at our faculty have no real experience in backing up and restoring.


Author(s):  
E. Wisse ◽  
A. Geerts ◽  
R.B. De Zanger

The slowscan and TV signal of the Philips SEM 505 and the signal of a TV camera attached to a Leitz fluorescent microscope, were digitized by the data acquisition processor of a Masscomp 5520S computer, which is based on a 16.7 MHz 68020 CPU with 10 Mb RAM memory, a graphics processor with two frame buffers for images with 8 bit / 256 grey values, a high definition (HD) monitor (910 × 1150), two hard disks (70 and 663 Mb) and a 60 Mb tape drive. The system is equipped with Imaging Technology video digitizing boards: analog I/O, an ALU, and two memory mapped frame buffers for TV images of the IP 512 series. The Masscomp computer has an ethernet connection to other computers, such as a Vax PDP 11/785, and a Sun 368i with a 327 Mb hard disk and a SCSI interface to an Exabyte 2.3 Gb helical scan tape drive. The operating system for these computers is based on different versions of Unix, such as RTU 4.1 (including NFS) on the acquisition computer, bsd 4.3 for the Vax, and Sun OS 4.0.1 for the Sun (with NFS).


2020 ◽  
Vol 6 (1) ◽  
pp. 1
Author(s):  
Kuswanto Kuswanto ◽  
Juan Junius ◽  
Anita Christine Sembiring

Facility layout is integrated planning of the flow of a product in an operating system to obtain the most effective and efficient interrelation between workers, materials, machinery, and equipment as well as handling and transferring materials. A company engaged in furniture manufacturing has a problem in its production process, namely, the distance between machines is too far so that it affects the cost of handling materials. Distant workstations are found on profile machines, milling machines, measuring machines, cutting machines. Therefore, improvements must be made to the layout of facilities on the production floor so that facility layout is efficient and material handling costs are reduced. The problem-solving approach used is the Graph Method and CRAFT Algorithm. The results of the research show that material handling costs are reduced by 7.58% or Rp. 17,765 using the CRAFT algorithm.


Author(s):  
Elly Mufida ◽  
David Wardana Agus Rahayu

The VoIP communication system at OMNI Hospital Alam Sutera uses the Elastix 2.5 server with the Centos 5.11 operating system. Elastix 2.5 by the developer has been declared End of Life. The server security system is a serious concern considering that VoIP servers can be accessed from the internet. Iptables and fail2ban applications are applications that are used to limit and counteract those who try to attack the VoIP server. One application that can be used as an open source VoIP server is the Issabel Application version 4.0. The migration process from Elastix 2.5 application to Issabel 4.0 by backing up all configurations in the Elastix 2.5 application through a web browser including the configuration of endpoints, fax, e-mail, asterisk. After the backup file is downloaded then upload the backup file to the Issabel 4.0 application then run the migration process. Adding a backup path as a failover connection is needed because the VoIP communication protocol between the OMNI Hospitals Group still uses one path so that when there is a problem in the connection path, the communication protocol will stop. The tunnel EoIP is a protocol used as a backup path between the OMNI Hospitals Group site.


2020 ◽  
Author(s):  
Adinda Ayu Fadhilah

Perangkat lunak komputer merupakan sebuah program komputer yang menjembatani pengguna komputer dan perangkat keras yang digunakannya. Dengan kata lain perangkat lunak merupakan penerjemah antara manusia sebagai orang yang memberi instruksi dan komputer sebagai pihak yang menerima instruksi. Perangkat lunak memang tidak tampak secara fisik dan tidak berwujud benda namun bisa untuk dioperasikan. Perangkat lunak secara garis besar software atau perangkat lunak dapat diklasifikasikan menjadi tiga bagian yaitu, perangkat lunak sistem operasi, perangkat lunak sistem aplikasi dan bahasa pemograman.Kata kunci : Perangkat Lunak KomputerAbstractComputer software is a computer program that bridges computer users and the hardware they use. In other words software is a translator between humans as the person who gives instructions and the computer as the party who receives instructions. The software does not appear physically and is not tangible but can be operated. Software outline software or software can be classified into three parts, namely, operating system software, application system software and programming languages.


2020 ◽  
Author(s):  
Hanny Puput Eliyarista Saragih

Perangkat lunak (software) adalah istilah khusus untuk data yang diformat, dan disimpan secara digital. Perangkat lunak tersusun atas program yang menentukan apa yang harus dilakukan oleh komputer. Komputer harus melaksanakan instruksi yang terdapat dalam program untuk mendapatkan hasil yang berguna. Ada dua macam perangkat lunak yaitu sistem software dan application software. Sistem software berguna untuk mengatur file, me-load dan mengeksekusi program serta menerima perintah dari mouse atau keyboard. Sistem software biasa disebut dengan sistem operasi (operating system). Sedang application software adalah software yang digunakan untuk menyelesaikan suatu pekerjaan. Contoh application software adalah Microsoft Word, Microsoft Excel.


2020 ◽  
Author(s):  
Nadila Putri Ayu

Perangkat Lunak merupakan salah satu perangkat yang dibutuhkan dalam menjalankan komputer. Perangkat lunak adalah perangkat yang tidak dapat dilihat dan disentuh secara langsung, namun dapat dioperasikan oleh user atau penggunanya. Perangkat lunak komputer (software) merupakan sekumpulan data elektronik yang disimpan dan diatur oleh komputer, data elektronik yang disimpan oleh komputer itu dapat berupa program atau instruksi yang akan menjalankan suatu perintah. Perangkat lunak disebut juga sebagai penerjemah perintah-perintah yang dijalankan pengguna komputer untuk diteruskan atau diproses oleh perangkat keras. Melalui software atau perangkat lunak inilah suatu komputer dapat menjalankan suatu perintah. Secara garis besar software atau perangkat lunak dapat diklasifikasikan menjadi tiga bagian yaitu, perangkat lunak sistem operasi, perangkat lunak sistem aplikasi dan bahasa pemograman.Kata Kunci : Perangkat Lunak AbstractComputer software is one of the devices needed to run a computer. Software is a device that cannot be seen and touched directly, but can be done by the user or the user. Computer software (software) is a collection of electronic data collected and compiled by a computer, electronic data stored by a computer may consist of programs or directions that will execute an order. Software is also referred to as a translator of commands run by computer users to be forwarded or processed by the hardware. It is through this software or software that a computer can run a request. Broadly speaking, software or software can be divided into three parts, namely, operating system software, application system software and programming languages.Keywords: Computer software


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