Re: [Bacula-users] Bytes/block=64,512 for an LT04

2018-01-31 Thread Ben Laurie
On 31 January 2018 at 10:26, Alan Brown wrote: > On 31/01/18 10:14, Ben Laurie wrote: > > I also have that on my LTO3 drive. > > You should test this using the fill command in btape (which will test > with uncompressible data). if the block size is set correctly you're > going to achieve very clo

Re: [Bacula-users] Bytes/block=64,512 for an LT04

2018-01-31 Thread Alan Brown
On 31/01/18 10:14, Ben Laurie wrote: > I also have that on my LTO3 drive. You should test this using the fill command in btape (which will test with uncompressible data). if the block size is set correctly you're going to achieve very close to the published throughput. Please note that 250MB/s fo

Re: [Bacula-users] Bytes/block=64,512 for an LT04

2018-01-31 Thread Ben Laurie
I also have that on my LTO3 drive. On 21 December 2017 at 23:08, Dan Langille wrote: > Hello, > > I'm using Bacula 7.4.7 on FreeBSD 11 > > What Bytes/block are you using for your LTO4 tapes? > > I ask because I just noticed: > > ### > Device tape is "LTO_0" (/dev/nsa0) mounted with: > Volum

Re: [Bacula-users] Bytes/block=64,512 for an LT04

2018-01-31 Thread Cejka Rudolf
Dan Langille wrote (2017/12/21): > Hello, > > I'm using Bacula 7.4.7 on FreeBSD 11 > > What Bytes/block are you using for your LTO4 tapes? Oops, I waited for the others and now I see that I'm waiting too much :o) I still do use Maximum Block Size = 65536 and I never had the problem. The big win

[Bacula-users] Bytes/block=64,512 for an LT04

2017-12-21 Thread Dan Langille
Hello, I'm using Bacula 7.4.7 on FreeBSD 11 What Bytes/block are you using for your LTO4 tapes? I ask because I just noticed: ### Device tape is "LTO_0" (/dev/nsa0) mounted with: Volume: 34L4 Pool:FullsLTO4 Media type: LTO4 Slot 38 is loaded in drive 0. Tot