----- "compdoc" compdoc@hotrodpc.com wrote:
The tape is easily replaceable, without having to worry about bad connectors that can plague hot swap drive bay equipment.
I really worry about your staff if you have damaged hot swap anything. How many insertions are they rated for? According to its data sheet, a lower end Tyco/AMP SATA connector measures up against EIA-364-09C (i.e., "Mate and unmated [sic] connector assemblies for 500 cycles at a maximum rate of 200 cycles/hour.") Other relevant forces are on there, and you can read the rest if you're interested here: http://tinyurl.com/ybnacp7 Basically, if you break them, you're doing something wrong or you are buying equipment with counterfeit or excessively substandard parts. I wouldn't consider this to be on the scale of a plague.
At $45 per tape for 320G of storage, it competes with hard drives. In case of tape drive failure, the tapes still work with the new drive. And with scsi or sata based tape drives, speed is not a problem.
Plus the cost of the tape drive (~$700), plus time, increased risk (longer backup duration means more risk), deployment flexibility, etc etc etc.
Combined with disk based network storage, tapes have a place in IT.
Yes, archival storage.
Christopher G. Stach II wrote:
----- "compdoc" compdoc@hotrodpc.com wrote:
Combined with disk based network storage, tapes have a place in IT.
Yes, archival storage.
Concur. You can buy 1TB RAID rated SATA drives (with a 7 year warranty) for $150 US from Newegg.
The strategy I use is build two machines, one on-site and one off-site, and use an rsync over ssh network back up strategy. Using nothing except off the shelf you can have a complete RAID6 multi-terabyte on and offsite backup system with 'deep' retention going back a year ( 7 x daily, 5 x weekly, 3 x monthly, 2 x quarterly, 2 x semiannual) for only two or three thousand dollars net and no consumables or manual intervention except when a new machine is added to the to be backed up or if a drive fails.
Let your backup array of hard drives falling down in the floor and try to restore something later... :p
I haven't this problem with my LTO/DAT tapes. I don't like backups in hard drives too.
2010/2/10 Benjamin Franz jfranz@freerun.com
Christopher G. Stach II wrote:
----- "compdoc" compdoc@hotrodpc.com wrote:
Combined with disk based network storage, tapes have a place in IT.
Yes, archival storage.
Concur. You can buy 1TB RAID rated SATA drives (with a 7 year warranty) for $150 US from Newegg.
The strategy I use is build two machines, one on-site and one off-site, and use an rsync over ssh network back up strategy. Using nothing except off the shelf you can have a complete RAID6 multi-terabyte on and offsite backup system with 'deep' retention going back a year ( 7 x daily, 5 x weekly, 3 x monthly, 2 x quarterly, 2 x semiannual) for only two or three thousand dollars net and no consumables or manual intervention except when a new machine is added to the to be backed up or if a drive fails.
-- Benjamin Franz
CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
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Lucas Timm LH