Hi,
LTO1 tape drive. 33 MB/s.
On 30 April 2010 00:03, Dean <dean.deano AT gmail DOT com> wrote:
> What type of tape drive is it and what speed are you getting at the moment?
>
>
> On Fri, Apr 30, 2010 at 8:21 AM, Feroz Basir <feroz.basir AT gmail DOT com>
> wrote:
>>
>> My backup is not going through the network. Tape library is attached
>> directly to server. I'm hoping to get better time here if I use 2 tape
>> drives at the same time (multi-stream). So, 2 tapes drive = 2 streams
>> I guess.
>>
>> As for multiplexing setting, by default it set to 1 which is what I have
>> now.
>>
>> On 29 April 2010 23:02, Chapman, Scott <Scott.Chapman AT icbc DOT com> wrote:
>> > If you multistream, you will have a different backup id for each
>> > individual stream, so you will be able to dup those backup images
>> > separately, thus continue to use one read drive and one write drive.
>> >
>> > Are you sure that writing your backup with 2 drives is going to decrease
>> > your backup time that much? You need to confirm where the bottleneck is
>> > first. If you find that you are killing the disk on the client, and if
>> > 2 streams means that you will be reading from 2 separate disks, then
>> > will your network handle that? I guess I'm saying, just don't be to
>> > sold on getting twice the backup speed just because you're now using two
>> > drives...
>> >
>> > HTH.
>> >
>> > Scott Chapman
>> > Senior Technical Specialist
>> > Storage and Database Administration
>> > ICBC - Victoria
>> > Ph: 250.414.7650 Cell: 250.213.9295
>> >
>> > -----Original Message-----
>> > From: veritas-bu-bounces AT mailman.eng.auburn DOT edu
>> > [mailto:veritas-bu-bounces AT mailman.eng.auburn DOT edu] On Behalf Of
>> > Feroz
>> > Basir
>> > Sent: Thursday, April 29, 2010 1:53 PM
>> > To: veritas-bu AT mailman.eng.auburn DOT edu
>> > Subject: [Veritas-bu] duplicate multi-stream backup tape
>> >
>> > Hi,
>> >
>> > I have 2 tape drives. Our backup is running too long now and been
>> > using 2 media tapes (one after another). I'm using bpduplicate to
>> > duplicate our backup tapes.
>> >
>> > Thinking of running our backup in multistream job to utilise 2 tape
>> > drives at the same time and save backup time. Hoping our backup time
>> > would be downed by half. My concern is during duplicate process. Do I
>> > need 4 tape drives in order to run multistream tape that use 2 tapes?
>> > How does one run duplicate job on multistream backup tapethat use more
>> > than one tape?
>> >
>> > Thanks for your input.
>> >
>> > --
>> > ------------
>> > regards,
>> > Feroz Basir
>> > _______________________________________________
>> > Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
>> > http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
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>> >
>>
>>
>>
>> --
>> ------------
>> regards,
>> Feroz Basir
>> _______________________________________________
>> Veritas-bu maillist - Veritas-bu AT mailman.eng.auburn DOT edu
>> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>
>
--
------------
regards,
Feroz Basir
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