Good point. Not a lot since most of the big stuff will be fairly static CAD data and photos. Most volitile will be Exchange stores and Vantage. I've considered incrementals (and am doing that now with my two 40GB DLT tapes) but the hitch there is the "baseline" full backup - and even then I still have to make them incrementals from the last baseline (last modified) rather than incremental to the last incremental (last backed up)...otherwise restoring is a PITA. Hopefully that sort of restoring will go away with snapshots. But getting a base tape set with 5-10 tapes would be a weekend project at least once a month.
Another option we are looking at if the cost of tape systems is high enough is a second SAN unit as an off-site replication. But this may wait until we have a second site.
Gary & Stan....great point on the hard drives and the CRU-Data looks very interesting. I could reconfig an old server with three bays for 500GB drives and be set. Drives are a little more fragile than tapes but I could get away with one weekly baseline and nightly incrementals. A foam padded carrying case to the take-home set and I'd be in great shape. I will explore this a bit more.
Thanks,
-Todd C.
-----Original Message-----
From: vantage@yahoogroups.com [mailto:vantage@yahoogroups.com]On Behalf Of Charles Paluska - HPN
Sent: Wednesday, April 18, 2007 1:21 PM
To: vantage@yahoogroups.com
Subject: Re: [ok] [Vantage] [OT] Tape Backup
Todd,
How much of your 1.5TB actually changes between backups?
Charles
Another option we are looking at if the cost of tape systems is high enough is a second SAN unit as an off-site replication. But this may wait until we have a second site.
Gary & Stan....great point on the hard drives and the CRU-Data looks very interesting. I could reconfig an old server with three bays for 500GB drives and be set. Drives are a little more fragile than tapes but I could get away with one weekly baseline and nightly incrementals. A foam padded carrying case to the take-home set and I'd be in great shape. I will explore this a bit more.
Thanks,
-Todd C.
-----Original Message-----
From: vantage@yahoogroups.com [mailto:vantage@yahoogroups.com]On Behalf Of Charles Paluska - HPN
Sent: Wednesday, April 18, 2007 1:21 PM
To: vantage@yahoogroups.com
Subject: Re: [ok] [Vantage] [OT] Tape Backup
Todd,
How much of your 1.5TB actually changes between backups?
Charles
----- Original Message -----
From: Todd Caughey
To: vantage@yahoogroups <mailto:vantage%40yahoogroups.com> .com
Sent: Wednesday, April 18, 2007 2:10 PM
Subject: [ok] [Vantage] [OT] Tape Backup
Just curious what people are having success with as far as high capacity tape backup. In conjunction with our SAN project have several proposals for tape backup. Some advocate autoloaders that will take 10 or more tapes to backup 1.5TB. A lot of tapes to drag home to meet "off-site" requirements from our auditors. Others push DLT-S4 that can hold that on one tape. Most seem to think we don't need tape backup at all with the highly redundant RAIDed SAN systems. Right. I sleep much better with at least a weekly backup set at home 12 miles away from the office and nightly sets in a fireproof vault in a concrete tunnel under the building.
So what do you use to backup 1TB or more and are you happy with it?
Thanks,
Todd Caughey
Harvey Vogel Mfg. Co.
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