Power consumption has become an important factor in modern storage system design. Power efficiency is particularly beneficial in disk-based backup systems that store mostly cold data, have significant idle periods, and must compete with the operational costs of tape-based backup. There are no prior published studies on power consumption in these systems, leaving researchers and practitioners to...

lost through user error, software or media failure, or site disaster but are unwilling to devote system resources or downtime to make backup copies of the data. Furthermore, with the rapid growth in the use of data storage and the tendency to move systems toward complete utilization (i.e., 24-hour by 7-day operation), the practice of taking the system off line to back up data is no longer feasi...

Disk drives are now available with capacity and price per capacity comparable to (and in some cases better than) nearline tape systems. Given disks' superior performance , density and maintainability characteristics, it seems likely that disks will soon overtake tapes as the backup medium of choice. In this paper, we outline the potential advantages of a backup system composed of high-capacity ...

Solar desiccant cooling is widely considered as an attractive replacement for conventional vapor compression air conditioning systems because of its environmental friendliness and energy efficiency advantages. The system performance of solar desiccant cooling strongly depends on the input parameters associated with the system components, such as the solar collector, storage tank and backup heat...

Abstract—Data deduplication (for short, dedupe) is a special data compression technique and has been widely adopted especially in backup storage systems with the primary aims of backup time saving as well as storage saving. Thus, most of the traditional dedupe research has focused more on the write performance improvement during the dedupe process while very little effort has been made at read ...

This white paper highlights integration features implemented in EMC Avamar with EMC Data Domain deduplication storage systems to allow high-speed data backup directly to Data Domain systems. The components outlined in this paper will provide IT backup administrators & consultants with a technical foundation to architecting efficient combined data deduplication backup solutions. February, 2014

This paper presents a survey of backup techniques for protecting file systems. These include such choices as device-based or file-based backup schemes, full vs. incremental backups, and optional data compression. Next, we discuss techniques for on-line backup (backups performed while users continue to access the file system); these techniques include file system locking and creating instantaneo...

In backup environments field deduplication yields major advantages. Deduplication is process of automatic elimination of duplicate data in a storage system and it is most effective technique to reduce storage costs. Deduplication effects predictably in data fragmentation, because logically continuous data is spread across many disk locations. Fragmentation mainly caused by duplicates from previ...