On Tue, 2003-08-26 at 09:25, Michael St. Laurent wrote: > I've got two DLT tape drives (HP Surestore-VS80) connected to an adaptec > AHA-2940UW. Both the drive and the controller should be capable of doing > 40MB/s transfers. The cable connecting them is an LVD cable. For some > reason it will not go any faster than 20MB/s. >From the Adaptec Web site... The AHA-2940 Ultra host adapter is the ideal PCI-to-SCSI host adapter for entry-level servers and workstations. It moves data fast -- up to 20 MByte/sec. And it connects up to 7 SCSI devices for expanded storage capacity. In addition, the AHA-2940 Ultra adapter delivers unrivaled system and peripheral compatibility. So, you have a HW limitation... http://www.adaptec.com/worldwide/product/proddetail.html?prodkey=AHA-2940AU > > scsi0 : Adaptec AIC7XXX EISA/VLB/PCI SCSI HBA DRIVER, Rev 6.2.8 > <Adaptec 2940 Ultra SCSI adapter> > aic7880: Ultra Wide Channel A, SCSI Id=7, 16/253 SCBs > > blk: queue c1ab7614, I/O limit 4095Mb (mask 0xffffffff) > (scsi0:A:3): 20.000MB/s transfers (10.000MHz, offset 8, 16bit) > Vendor: BNCHMARK Model: DLT1 Rev: 5032 > Type: Sequential-Access ANSI SCSI revision: 02 > blk: queue c1ab7814, I/O limit 4095Mb (mask 0xffffffff) > (scsi0:A:5): 20.000MB/s transfers (10.000MHz, offset 8, 16bit) > Vendor: BNCHMARK Model: DLT1 Rev: 5032 > Type: Sequential-Access ANSI SCSI revision: 02 > blk: queue c1ab7a14, I/O limit 4095Mb (mask 0xffffffff) > > Is there something I'm missing the in the configuration somewhere? > > -- > Michael St. Laurent > Hartwell Corporation -- http://www.shorewall.net Shorewall, for all your firewall needs -- Shrike-list mailing list Shrike-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/shrike-list
