SIZE_DATA_BUFFERS... Mix of SAS&SCSI.
Hi guys, I've just recently added a LTO3 SCSI to my NBU server because I needed the ability to read older tapes, whilst doing so I thought I might as well put it into the pool so I can utilise it for backups, the server has a SAS Quantum i40 with an LTO5, and the SCSI ArcVault 24 LTO3, I've had this issue before when trying to use my old LTO4 on a different NBU env, where the settings were tweaked and the buffers ramped up to improve performance.
But from what a consultant told me, SAS ignores the buffer sizes and just maxes out the bandwidth regardless? So if I were to reduce the buffers to accomodate the SCSI, it shouldn't have a knock on effect with the SAS and cure the below error?
1/24/2013 5:01:40 PM - Error bptm(pid=1836) The tape device at index -1 has a maximum block size of 65536 bytes, a buffer size of 262144 cannot be used
Unfortunately, I cannot tweak the settings on the SCSI HBA itself as the Adaptec 29320lpe doesn't have the ability to do this.
(NBU 22.214.171.124 & Win2k8 R2 SP2)