Sergio A Lima Jr wrote:
-----Forwarded Message-----
Sorry for not replying the first time. Too busy at that time, and later the message got scrolled above the top of my screen (about equal to the horizon of a computer geek).
From: Sergio A Lima Jr <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Sony tape ::newbie questions:: Date: Thu, 01 Jul 2004 08:11:13 -0300
Hi my friends,
I'm enable back-up server in my company and are dificulties in configuration amanda.conf and tapehcharger.
The device tape is above description:
scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.4 <Adaptec 2940A Ultra SCSI adapter> aic7860: Ultra Single Channel A, SCSI Id=7, 3/253 SCBs
Vendor: SONY Model: SDT-4000E Rev: E326 Type: Sequential-Access ANSI SCSI revision: 02 (scsi0:A:3): 5.000MB/s transfers (5.000MHz, offset 8)
When running amtapetype, receiv this information:
define tapetype unknown-tapetype { comment "hardware compression on" length 2048 mbytes filemark 0 kbytes speed 267 kps }
I don't have any experience with a Sony SDT-4000E, but "2048" seems a bit suspicious as "random" number for capacity, (especially with hardware compression on, which expands random data on all but the most modern drives). Is this more or less in the range that you expect for that kind of hardware?
If you really want to use hardware compression, then you have to make a wild guess of how much uncompressed data will fit on the tape. Running amtapetype for getting the numbers is just a weird hobby in that case.
If you want Amanda to do accurate calculations with these tapetype numbers, then you better have hardware compression off (and use
software compression if you like).
Whith configure my amanda.conf and chg-scsi.conf files for correct executing amanda back-up program?
I don't have a real changer. Don't know anything about it. Other experts using chg-scsi ?
You have to add that tapetype definition (using a better name than "unknown-tapetype") to amanda.conf and change the tapetype to point to that tapetype, like:
tapetype my2Gig
define tapetype my2Gig {
comment "hardware compression on"
length 2048 mbytes
filemark 0 kbytes
speed 267 kps
}
I guess the real problem is much deeper than tapetype, isn't it? Explain what you try to do (e.g. weekly full backups using 20 tapes, and running each weekday). Also post the amanda.conf you build thus far.
Best regards. Thanks
P.S.: Please, sorry my bad english.
Never mind. Mine is quiet bad, euh, quite bad too (he, Stefan?).
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