dschmitd wrote:>is this an HP brand tape drive?
Yes. I will try to disable hardware compression. But so far as I know does the drive automatically switch off hardware compression, if the data is not compressible.
I don't know how that's possible, since a backup job can write a mixture of anything... some of it highly compressible and some of it uncompressible..
The "hardware compression" feature is a hardware option, and you use the LT&T Tools program from HP to manipulate that option, although a software product (e.g. NovaBackup) could also do the same thing. In fact, NovaBackup does NOT touch the hardware compression setting of the drive at all, but rather leaves it exactly as whatever it's set at. Which is why you need to first use HP's utility to turn the option off, if that's the kind of backup job you're running where having NO hardware compression would improve media and drive performance.
I mention that in contrast, Sonic's Backup MyPC v6.0 (which I used under WinXP before upgrading to Win7 and being forced to find another product) actually DOES always turn "hardware compression" on before the job begins. This was frustrating, as I couldn't disable the feature before running a backup of uncompressible data as I wanted to. So in that regard, NovaBackup is "superior" to Backup MyPC, as it does not tamper with that feature and let's the user pre-set it to whatever the user wants.
>have you ever used this tape drive with another software product / computer ....
Well then there's really nothing to compare it too. Software products that do blocking, add overhead with header fields, etc., rarely if ever can achieve the hardware-rated speed that is theoretically possible per the manufacturer's specs.
Just for the sake of experimenting and gathering some comparison statistics to see how your LTO drive performs with other software, why don't you install trial versions of some other products and run some experiments? I'd be interested in seeing those numbers.
Personally, I've tried the following three other products (since they supported SCSI DAT tape drives, which was a requirement for my product selection) and didn't like any of them. I ultimately settled on NovaStor (although I do have a good-sized list of product improvement suggestions I've sent to them).
(1) Uranium Pro Backup ($213): http://www.uraniumbackup.com/index-en.aspx
(2) Acronis Backup and Recovery 11 Advanced Workstation ($99): http://www.acronis.com/backup-recovery/#overview
(3) HP Data Protector Express ($650): https://h20392.www2.hp.com/portal/swdep ... mber=DPXSW
>you didn't mention your Windows OS?
Well then that leaves out Sonic Backup MyPC v6.0 as another option for you, if it even supported LTO tape drives.
>...that it does NOT use "hardware tape index marks"...
Indeed, in general a big disadvantage but not so important for me. I need a software only for backup/restore and not for archiving. I hope that I never have to use the restore function. And if this really happens sometime, the cause for this most probably will be a defect hard disc. In this case I have to restore the complete disk anyway.
Actually, for me it is completely the opposite.
I only use the "full restore" functionality if say I'm upgrading a hard drive to a much larger one. Otherwise, virtually all of the occasional restore usage I get is "selective restore". And because of the built-in serious performance defect of NovaBackup and tape (i.e. that it does NOT use hardware tape index marks for positioning) I have specifically begun using disk backups for 1-2 most recent generations, along with 4-6 generations on tape. Since almost always getting a prior version from the most recent 1-2 generations is what I want, there's no performance issue when using the disk backup media for the selective restore.
But if I was using tape, I'd sure hate to spend 3 1/2 hours getting one file back (using the READ method) when it should have taken 90 seconds (using the SPIN method).