Posts Tagged ‘Used’

Hardware Used in Storage Backup and Recovery

 

By: Muthu Senthil Kumar M

This article mainly related with storage backup and recovery. It describes what are all the hardware’s used in the storage backup and recovery technologies. So many hardware components used in the Storage Backup areas. It is not the article to bring out the functionalities of that hardware parts. It gives the information and related technical details of that hardware used in the storage backup and recovery technology.

There are three main important hardware’s are used in the storage backup and recovery technology. They are Server, Subsystems and Switches. Each one has its own hardware parts. Let’s see the information and technical details of this hardware parts.

The Master server performs all Backup administrative functions and controls the backup scheduling for each media server. The requirements needed for Master Server,

· Processors

· Memory

· I/O Connectivity

· Operating System

· Backup Software

The media server performs the backup operations under the direction of the master, with all backup data stored locally on the media server and its respective storage devices. The same above Master Server requirements are applicable to Media Server also.

Direct attached storage (DAS), storage area network (SAN), and network-attached storage (NAS) are the three basic types of storage subsystems used in Storage backup hardware management. DAS is the basic building block in a storage system, and it can be employed directly or indirectly when used inside SAN and NAS systems. NAS is the highest layer of storage and can be built on top of a SAN or DAS storage system. SAN is somewhere between a DAS and a NAS.

 

Hardware used in the Storage subsystem

SCSI

It is abbreviated like Small Computer System Interface. It is the famous storage subsystem component used in all medium and small level computer interfaces. A mechanism called ‘Cable Sharing’ used here. It can support the data transfer rate up to 320 MB/s.

PATA

Parallel Advanced technology Attachment is shortly named as PATA. It can support data transfer up to 133 MB/s. Nowadays SATA replaces this PATA in all areas. But the recent version UDMA133 is used in some subsystems depends upon the customer requirement.

SATA

Serial Advanced Technology Attachment is commonly known as SATA. It is the very common hard disk interface used in all personal systems. One SATA port permits one device to connect to it.

SAS

It means Serial Attached SCSI. The name itself tells, it can be seen as a merged SCSI and SATA interface. It has various data transfer rates like 185, 374, 750, and 1,500 MB/s. SATA devices can connect to SAS but SAS devices can’t connect with SATA ports. It is specifically designed for the high-end servers. SAS offers the best of SCSI and SATA.

FC

Fibre Channel has a main advantage of its length. It works the same like SATA, but it can covers the distance up to 2kms (Example: Single Mode Fibre). FC offers speeds of 100, 200, and 400 MB/s.

iSCSI

Internet SCSI is shortly known as iSCSI. It is normally used in all LANs. It is Low-cost alternative to FC. Easier to manage because it uses the common TCP/IP protocol and common Ethernet switches.

AoE

ATA over Ethernet. It is a very low cost alternative to iSCSI. It encapsulates ATA commands into low-level Ethernet frames and avoids using TCP/IP. A lot of add-on initiator/target software will support both iSCSI and AoE.

Ethernet Switches

A switch is something that is used to turn on or off various electronic devices. However, in computer networking, a switch is used to connect multiple computers with each other. Since it is an external device it becomes part of the hardware peripherals used in the operation of storage backup and recovery. This connection has done within an existing Local Area network (LAN) only and is identical to an Ethernet hub in terms of appearance except with more intelligence. These switches not only receive data packets, but also have the ability to inspect them before passing them on to the next computer. That is, they can figure out the source, the contents of the data, and identify the destination as well. Because of this uniqueness; it sends the data to the relevant connected system only, thereby using less bandwidth at high performance rates. Ethernet switches were used to provide connections and link aggregation between the backup clients, media servers, and master server using network speeds of 100 Mb/sec, 1 Gb/sec, and 10 Gb/sec.

SAN Switches

SAN switches were used to provide Fibre Channel connections between the Backup media servers and the tape libraries. The below listed companies are working with SAN switches worldwide.

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Consequences of data loss and Why should Offsite Backup be used

There is a calculated trend in all business corporations and firms: when the enterprise is getting bigger, its support of data increases its complexity, volume and value. The larger your enterprise is, the more significant your data files become. The traditional tape backup can no longer produce in-depth data information about all the important features of your business. That’s why many people get acknowledged to a more adequate file protection. A secure offsite backup system can be the possible solution. Business owners and offices managers have got it straight: if the business is to flourish, precise data information storage should be used.

Offsite backup systems offer something, which no other data store can do: they protect to the greatest extent all your files. But why should they do that, you may ask. Imagine you are a business owner. You have your own office computer, which is crammed up with all the valuable info. Well, what if the computer gets stolen, or a short-cut puts it out of practice? What will happen to your enterprise? If you are still not convinced enough to the rational extent, let’s consider the following statistic data. 1 in every 4 computer users suffers a critical data loss every year. Last years over 500,000 were stolen. Disk and other hardware failures are so numerous that major disk and computer manufacturers/resellers are reducing their warranties to 12 months. Over 25% of data loss is a result of computer program errors, software viruses and natural disasters (factors completely out of your control). 50% of businesses that lose their data never open their doors again. Of those businesses that do manage to stay open, 90% end up failing within two years. Data loss will cost business an estimated £12 Billion this year.

Still not believing? Consider the following fact: computer experts say that once data is lost, it can no longer be recovered to the full. Some data that contains pieces of valuable information will be forever lost in the digital space, with no hope of getting it back. Disaster recovery planning (DV) often fails to extract the lost files in the similar way as they were before the disaster struck. This happens because of the various regulations and compliance, which occur during the recovery process.

Data loss can happen to anyone, no matter how good the tape protection system is. There is no tape backup that can comprise all the valuable information without omitting some precious stuff. Text documents, financial records, contact records, address books, email messages and databases that you have created on your computer or servers may disappear forever unless you take a serious action to prevent it. The lost files are hard to recover, and it takes a lot of precious time and nerve-racking to recover even to the approximate extent the ruined system as it was before the disaster. The value of data highly exceed the mere cost of your computer or server, as you have to pay a great amount of money for reproducing the whole information as it was before the crack down. So, the most reasonable thing to do, if you don’t want to spend a lot of money afterwards, is to re-ensure your system using secure online backups.

Even though that is the sacred truth, most people avoid taking backup precautions. They leave their data files unprotected, and thus expose their business on the danger of bankrupt. Why do people do it? Because of laziness, because they don’t want to spend additional money, or just because they think that would never happen to them. Is it so hard to take some pre-consideration and backup your data? Sooner or later, everyone gets a strike in their unprotected file systems. Then it is too late to split hairs over the lost information. You should better take the action in advance and construct a data backup system, so that your files are fully protected and your business is ensured.

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