 Symantec 250-252 : dministration of Veritas Storage Foundation 6.0 for Unix ExamExam Dumps Organized by Donghai
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Exam Number : 250-252
Exam Name : dministration of Veritas Storage Foundation 6.0 for Unix
Vendor Name : Symantec
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Symantec of Cheatsheet
As records volumes proceed to rise with the aid of double-digit percentages every yr, IT managers face a hard reality. not only have to they find room to store all this assistance, they also should hold it simply attainable, included from technical system faults and safe from mess ups.
at the end of 2010, the quantity of saved records international totaled 1.2 million petabytes (1 petabyte equals 1 million gigabytes), according to the 2010 IDC Digital Universe study, performed by means of know-how researcher IDC. That’s a 50 % rise from the 12 months before.
the way for a company to thrive in an environment of exponentially expanding statistics retailers, along with considerations about business continuity, is to put in force a multipronged storage approach — one which goes beyond spending more funds to acquire extra storage skill.
Analysts and vendors say the solution is to create tiers of storage for primary and backup records, as well as for catastrophe recuperation (DR) and archived statistics. here’s what a modern company IT infrastructure should maintain data protected and totally attainable.
Tier One: basic Storage
simple storage techniques should still manage essentially the most-used counsel via counting on applied sciences that deliver the fastest facts access prices. usually, getting the fastest fees requires deploying solid-state drives, excessive-performance SCSI disk drives and Fibre Channel arrays. These technologies are fast and respectable, but are also essentially the most expensive.
groups can justify the prices by holding their most crucial statistics on these efficiency stars handiest as long as vital, which is so long as stakeholders are actively using the facts for core enterprise wants. As guidance ages, computerized management software can stream it to different storage tiers made of less costly components.
To get essentially the most out of expensive tier-one hardware, businesses can use storage virtualization and skinny-provisioning technologies. Virtualization creates an enterprisewide pool of storage capacity via aggregating storage enviornment network (SAN) and community-connected storage (NAS) instruments, two solutions for creating smaller, localized storage pools. Virtualization also lets companies centrally manipulate these storage substances and scale up means devoid of production downtime that impairs enterprise continuity.
skinny provisioning builds on storage virtualization with the aid of letting IT managers dynamically allocate accessible storage capacity within the commercial enterprise pool. If one array has added terabytes of capacity and an additional array is starved for space, managers can rapidly divvy up elements between them.
Virtualized storage environments can also immediately shift materials according to pre-set conditions. clients crunching numbers or finalizing a quarterly construction evaluation received’t be littered with these at the back of-the-scenes activities.
Tier Two: Backup Storage
once all basic statistics is virtualized, the company can without difficulty move copies to a tier-two backup layer for added coverage. professional storage hardware is a need to for tier two, however excessive performance isn’t as important as for the primary tier.
groups can construct the backup layer with arrays using much less high priced iSCSI and SATA challenging drives. To be sure these add-ons are used effectively, IT managers may still also put into effect data deduplication applied sciences to avoid backing up redundant suggestions and wasting storage potential.
“File deduplication boils all the way down to a simple thought,” says Joe Disher, solutions advertising supervisor for Overland Storage. “There is not any should have the equal PowerPoint doc or the identical word document stowed in 25 diverse folders.”
facts dedupe can cut back the amount of saved facts with the aid of a factor of 10, adds Peter Elliman, senior supervisor for product advertising and marketing in Symantec’s assistance administration neighborhood. apart from getting rid of waste, organizations can reproduction all their essential information to tier-two methods during disbursed, after-hours backup home windows.
companies at the moment are pushing to get even more cost out of deduplication. corporations historically filtered facts through dedupe software before it reached target storage gadgets — those that sat behind the backup server in their backup environments. Now the focus is additionally on dedupe at the client stage, particularly the servers the place information lives.
“This reduces the information stream additional upstream, which means you don’t want greater pipes to stream all of the turning out to be information around your network,” Elliman says. The mixture of goal and customer deduplication can reduce the quantity of information being moved via as a great deal as ninety nine %, he adds.
Tier Three: disaster restoration
This third storage tier acts as the insurance policy for when the unthinkable happens: a large-scale disaster that destroys particular person storage arrays or an entire data center, taking vital information together with it.
a hit DR planning encompasses each local statistics replication, to offer protection to in opposition t minor outages, and lengthy-distance replication to a catastrophe healing website situated outdoor of the geographical vicinity of the basic facts middle. This guarantees that one experience received’t take down each resources. IT managers need distinctive innovations for every of those replication necessities.
a fantastic choice for local replication includes storage arrays the usage of SAN instruments constructed with Fibre Channel and iSCSI connectivity. Some units include two controllers, so if one component fails the different instantly takes over to retain operations operating. reaching redundancy and replication among components inside a single field makes this a cost-effective alternative for top availability.
For greater reliability, but at a far better fee, groups can choose to connect identically configured, single-controller SANs collectively into so-referred to as energetic-active clusters. If one unit crashes, the different automatically takes over the further responsibilities.
“i will have one device completely die, the entire disks catch on hearth,” Overland Storage’s Disher says. “And it doesn’t matter; I don’t lose any application availability.”
selections for lengthy-distance replication come all the way down to weighing the execs and cons of synchronous or asynchronous statistics replication. With synchronous replication, information moves separately from the simple site to the DR web page.
The leading site doesn’t send the next chunk except the DR area confirms the past transfer has correctly achieved. This ensures that no statistics is lost throughout replication as a result of short network outages or different problems. despite the fact, distance obstacles may be a problem for some groups.
Synchronous replication requires websites to be below 100 miles apart (greatly less in some circumstances, reckoning on WAN qualities and different factors). Some organizations overcome this quandary with a collection of intermediate websites that relay facts between the primary and the DR websites.
Asynchronous replication avoids stringent distance boundaries and conversation delays by way of sending records continually with no collection of lower back-and-forth confirmation messages. The exchange-off, however, is that asynchronous replication doesn’t present safeguards in opposition t capabilities facts losses during transmission.
How do you come to a decision? Analyze records to determine what’s less crucial and what can tolerate probably the most dangers of asynchronous replication. provide protection to data that requires the most appropriate care with extra costly synchronous replications.
The technical challenges and WAN prices linked to replication drive many groups to persist with tape storage. whereas tape has been round for awhile, it remains a tried-and-real know-how for catastrophe recuperation operations.
With tape, enterprises can safely save information in diverse, geographically dispersed locations and, in some instances, at better healing instances. here's in particular positive when data volumes are giant sufficient to stress networks if a DR web page has to upload a full data save to a major facility.
Tier four: facts Archives
facts archiving is the procedure of relocating records deemed inactive to a storage device for long-term retention. reasonably priced and reliability additionally make the existing
tape applied sciences a chief choice for data archives.
advice during this layer is older and barely accessed. still, these information continue to be useful adequate to fall within corporate or regulatory retention necessities.
wise archiving is obtainable. It starts via knowing what suggestions must be archived and the way the corporation values that assistance.
records management equipment
To create four storage tiers and subsequently send statistics to the right layers, IT managers need an assortment of information administration equipment. These applications help groups assess the age and how continually people entry certain data.
the use of instructions determined via IT managers, the applications can automatically stream particular person information to probably the most applicable tier at every aspect in the records’s lifecycle.
records management equipment go a number of product categories, from counsel lifecycle administration and automatic storage tiering applied sciences to facts deduplication, replication, backup and healing, and archiving solutions.
agencies may additionally decide to integrate factor products from distinct companies or count on a pre-integrated suite of items from a single dealer. both approach, IT managers need to be sure the last solution can control statistics from each real and virtual IT environments.
Clear visibility throughout each of these environments requires shut work with workforce participants answerable for imposing and configuring servers. body of workers may still make certain that storage issues are part of the provisioning method.
To support, some of nowadays’s backup tools can instantly discover and inventory virtual servers after which identify no matter if the information linked to each of them is being included correctly.
in addition, some equipment aid IT managers peer inner digital machines. here is crucial because most statistics restoration requests are for particular person data, which can also be complicated to find inside a number of digital machines.
Tiered storage providers consist of EMC, IBM, Overland Storage, Symantec and others. Symantec currently brought V-Ray, for its NetBackup and Backup Exec items, which lets corporations see into virtual machines to more advantageous have in mind a way to offer protection to them.
in the end, excessive availability and fault tolerance have develop into simple aspects of a sound storage management method — now not separate considerations made after the storage infrastructure is in area.
“the important thing during this period of high records growth and excessive demand, is to construct company continuity in from the birth for primary storage, for backup storage and for archival methods,” says Eric Herzog, vp of product administration and marketing for EMC's Unified Storage Division.
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