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What technologies are common for SAN-to-SAN replication? <br />
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Also when you use a backup software to backup to SAN, how would an admin map to the location on the SAN where the backup files reside if they needed to copy a file away for whatever purposes, if they had to? Would you typically have a VM with SAN drives mapped which you could navigate to through windows, or is there other ways in order to access the data?<br />
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In terms of backups, if you backup to a local SAN, and then replicate to a DR SAN, would that be sufficient, or would you suggest a 3rd backup perhaps a tape library attached to DR SAN in case somehow both failed?Obviously there is only so much budget.
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What technologies are common for SAN-to-SAN replication? 

Also when you use a backup software to backup to SAN, how would an admin map to the location on the SAN where the backup files reside if they needed to copy a file away for whatever purposes, if they had to? Would you typically have a VM with SAN drives mapped which you could navigate to through windows, or is there other ways in order to access the data?

In terms of backups, if you backup to a local SAN, and then replicate to a DR SAN, would that be sufficient, or would you suggest a 3rd backup perhaps a tape library attached to DR SAN in case somehow both failed?Obviously there is only so much budget.

SAN replication

Computer data storage, often called storage or memory, is a technology consisting of computer components and recording media used to retain digital data. In addition to local storage devices like CD and DVD readers, hard drives and flash drives, solid state drives can hold enormous amounts of data in a very small device. Cloud services and other new forms of remote storage also add to the capacity of devices and their ability to access more data without building additional data storage into a device.

Storage

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.