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Get Started
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Let
one of our experienced technical
sales reps evaluate your backup
and
storage needs and build a solution
that will protect data while
saving
time and resources. The industry's
leading pre- and post-sale support
is
just a phone call away.
757-833-9000. |
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USB
Disk Offload
The
miSAN D Series has a front panel USB
port for quick and easy offload from
RAID volume to portable volume. The miSAN D Series engine, SANDR includes a menu option for
offloading a virtual disk volume to a
standard USB disk drive.
The USB disk drive is fully
functional as a live disk and can be
mounted as a volume on another server.
iSCSI
SAN Backup - miSAN V Series
Full Backup
Anyone who has ever experienced a recovery emergency first hand is a true believer in the importance of frequent full backups. While intermediary strategies like snapshots and replication are tremendous for day-to-day business continuity and uptime, full backup is an absolute necessity for true security against data loss.
Tape is still the best medium for long term archives – it is very rugged and has an incredible shelf life. Perhaps tape’s best attribute is the fact that the media is not dependent on any given tape drive. A drive with read/write heads may be very fragile, but the tape is not sensitive and can easily be transported to another drive or another location for data recovery.
While data deduplication may be the current buzz in backup, one should really think about the application of this technology. Deduplicating data for transport over slower WAN connections for purposes of data replication and synchronization makes perfect sense. The data volume is reduced, making WAN speeds feasible, and the disk volumes are synchronized so there is a full copy of the data.
Deduplication for the sake of reducing the size of backup is altogether different. If backup is defined as redundant copies of data, deduplication, or elimination of all redundancy is the antithesis of backup. Deduplication solutions build a complex database of pointers for all references to the same data sequence. Some of these solutions even rely on a hashing algorithm to determine whether the data sequences are in fact identical. There is a statistically significant chance that the hash will return an incorrect result, primarily because the data tested is not purely random in nature. Why risk the integrity of full backup when the cost of disk storage is only about $1 per GB, and the cost of tape storage is only about 10 cents per GB. In a recovery, access to more than one backup copy can mean the difference between success and failure.
Today, Cybernetics has the most advanced full backup solution on the market, using the power of virtualization to capitalize on the exceptional benefits of both disk and tape – the miSAN V Series iSCSI SAN backup solution.
Virtual
Tape
Few realize that a backup to virtual tape on disk is much faster than a disk-to-disk file system copy backup. Tape has been the primary backup medium from the beginning and data is laid to tape in a highly efficient format whereas a disk copy has file system overhead, resulting in poor backup performance. On any given file, a backup to virtual tape will far exceed the performance of a disk copy of the same file. The same performance benefits apply to restores. In an instant, a virtual tape is loaded, the file is located, and the restore begins at RAID 5, virtual tape speed.
Virtualization has an even more significant performance benefit. Several virtual tape drives can all run completely independent backup jobs simultaneously. With just one or two tape drives, servers are backed up in sequence, each waiting for the previous backup job to complete. With up to ten virtual tape drives running concurrent backup jobs in a miSAN V Series model, the window required for backup is reduced dramatically. The miSAN can achieve speeds in excess of 300 MB/s while streaming concurrent backup jobs.
Backup to removable tape can be slowed by backup software overhead – many software packages have a maximum speed of 60 MB/s per backup job. Linear tape drives often tape a significant performance hit due to inconstant data streams resulting in repositioning, or “shoe-shining.” Customers using LTO-4, a tape technology with the ability to handle 120 MB/s uncompressed, commonly achieve half of their potential. Since the miSAN virtual tape library offloads virtual tapes to physical tapes via a dedicated U320 SCSI bus, off-line and without backup software or other overhead, an LTO-4 tape can be written or read at its peak performance of 120 MB/s, or better with compression.
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