Measuring the cost of storage management

1996 ◽  
Vol 9 (4) ◽  
pp. 323-342 ◽  
Author(s):  
David Tarditi ◽  
Amer Diwan
Keyword(s):  
Storage Management ◽  
The Cost

GoSeed: Optimal Seeding Plan for Deduplicated Storage

2021 ◽  
Vol 17 (3) ◽  
pp. 1-28
Author(s):  
Aviv Nachman ◽  
Sarai Sheinvald ◽  
Ariel Kolikant ◽  
Gala Yadgar
Keyword(s):  
Linear Programming ◽  
Integer Linear Programming ◽  
Target Volume ◽  
Storage Management ◽  
Data Migration ◽  
Acceleration Methods ◽  
Easy Problem ◽  
Storage Volume ◽  
Problem Instances ◽  
The Cost

Deduplication decreases the physical occupancy of files in a storage volume by removing duplicate copies of data chunks, but creates data-sharing dependencies that complicate standard storage management tasks. Specifically, data migration plans must consider the dependencies between files that are remapped to new volumes and files that are not. Thus far, only greedy approaches have been suggested for constructing such plans, and it is unclear how they compare to one another and how much they can be improved. We set to bridge this gap for seeding —migration in which the target volume is initially empty. We prove that even this basic instance of data migration is NP-hard in the presence of deduplication. We then present GoSeed, a formulation of seeding as an integer linear programming (ILP) problem, and three acceleration methods for applying it to real-sized storage volumes. Our experimental evaluation shows that, while the greedy approaches perform well on “easy” problem instances, the cost of their solution can be significantly higher than that of GoSeed’s solution on “hard” instances, for which they are sometimes unable to find a solution at all.

Measuring the Cost of Storage Management,

1995 ◽  
Author(s):  
David Tarditi ◽  
Amer Diwan
Keyword(s):  
Storage Management ◽  
The Cost

The Design of the Central Kitchen Logistics Distribution System

2014 ◽  
Vol 1008-1009 ◽  
pp. 1489-1492
Author(s):  
Yan Wang ◽  
Shan Shan Zhang
Keyword(s):  
Distribution System ◽  
Financial Analysis ◽  
Storage Management ◽  
Financial Control ◽  
Mathematics Model ◽  
Logistics Distribution ◽  
Order Management ◽  
Practical Principle ◽  
Set Up ◽  
The Cost

The design aims at the central kitchen to flow the system, realizes a lot of function, such as order management, merchandise delivery, storage management, financial control and so on. The system bases on the characteristic of central kitchen which is about "one contains many", follows the simple, economically and practical principle, set up the algorithm for delivery, optimizes the situation for the vehicle, considers the priority of customer, optimized the route of merchandise delivery, enhances the efficiency, reduces the cost, and the order management, the storage management the situation of dynamic management of storage management are more scientific and standardized. Moreover the system has supported the financial analysis function, and the enterprise cost can be analyzed and appraised by mathematics model.

The IBM-PC in electron microscopy

1996 ◽  
Vol 54 ◽  
pp. 612-613
Author(s):  
James F. Mancuso
Keyword(s):  
Head Start ◽  
Image Acquisition ◽  
Cost Effective ◽  
Financial Applications ◽  
Number Of Factors ◽  
Instrument Control ◽  
The Cost ◽  
Training And Support ◽  
Control Image ◽  
Ibm Pc

IBM PC compatible computers are widely used in microscopy for applications ranging from control to image acquisition and analysis. The choice of IBM-PC based systems over competing computer platforms can be based on technical merit alone or on a number of factors relating to economics, availability of peripherals, management dictum, or simple personal preference.IBM-PC got a strong “head start” by first dominating clerical, document processing and financial applications. The use of these computers spilled into the laboratory where the DOS based IBM-PC replaced mini-computers. Compared to minicomputer, the PC provided a more for cost-effective platform for applications in numerical analysis, engineering and design, instrument control, image acquisition and image processing. In addition, the sitewide use of a common PC platform could reduce the cost of training and support services relative to cases where many different computer platforms were used. This could be especially true for the microscopists who must use computers in both the laboratory and the office.

New Feasible Concepts of Aberration Correction for Realizing High-Resolution Electron Microscopes

1990 ◽  
Vol 48 (1) ◽  
pp. 202-203
Author(s):  
H. Rose
Keyword(s):  
Spherical Aberration ◽  
Wave Length ◽  
Electron Wave ◽  
Optical Lens ◽  
Resolution Electron ◽  
Rotationally Symmetric ◽  
Electron Microscopes ◽  
The Cost ◽  
Imaging Performance ◽  
Acceleration Voltage

The imaging performance of the light optical lens systems has reached such a degree of perfection that nowadays numerical apertures of about 1 can be utilized. Compared to this state of development the objective lenses of electron microscopes are rather poor allowing at most usable apertures somewhat smaller than 10-2 . This severe shortcoming is due to the unavoidable axial chromatic and spherical aberration of rotationally symmetric electron lenses employed so far in all electron microscopes.The resolution of such electron microscopes can only be improved by increasing the accelerating voltage which shortens the electron wave length. Unfortunately, this procedure is rather ineffective because the achievable gain in resolution is only proportional to λ1/4 for a fixed magnetic field strength determined by the magnetic saturation of the pole pieces. Moreover, increasing the acceleration voltage results in deleterious knock-on processes and in extreme difficulties to stabilize the high voltage. Last not least the cost increase exponentially with voltage.

An application: the cost of clinic care by undergraduate dental students and its relationship to clinic fees

1994 ◽  
Vol 58 (11) ◽  
pp. 832-835 ◽  
Author(s):  
ES Solomon ◽  
TK Hasegawa ◽  
JD Shulman ◽  
PO Walker
Keyword(s):  
Dental Students ◽  
The Cost

The effect of heliotherapy on the cost of psoriasis, p. 288

1998 ◽  
Vol 138 (2) ◽  
pp. 205-205
Author(s):  
Snellman ◽  
Maljanen ◽  
Aromaa ◽  
Reunanen ◽  
Jyrkinen‐Pakkasvirta ◽  
...  
Keyword(s):  
The Cost

718: Modeling the Cost of Management Options for Stage I Nonseminomatous Germ Cell Tumors: A Decision Tree Analysis

2005 ◽  
Vol 173 (4S) ◽  
pp. 195-196
Author(s):  
Richard E. Link ◽  
Mohamad E. Allaf ◽  
Roberto Pili ◽  
Louis R. Kavoussi
Keyword(s):  
Decision Tree ◽  
Germ Cell ◽  
Germ Cell Tumors ◽  
Stage I ◽  
Decision Tree Analysis ◽  
Management Options ◽  
Tree Analysis ◽  
The Cost ◽  
Nonseminomatous Germ Cell Tumors

152: Urinary Incontinence: The Cost Burden for Women

2004 ◽  
Vol 171 (4S) ◽  
pp. 40-40
Author(s):  
Leslee L. Subak ◽  
Stephen K. Van Den Eeden ◽  
Jeanette S. Brown ◽  
Arona I. Ragins ◽  
Eric Vittinghoff ◽  
...  
Keyword(s):  
Urinary Incontinence ◽  
Cost Burden ◽  
The Cost
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