1.\" $OpenBSD: twe.4,v 1.25 2007/05/31 19:19:52 jmc Exp $ 2.\" 3.\" Michael Shalayeff, 2000. Public Domain. 4.\" 5.Dd $Mdocdate: May 31 2007 $ 6.Dt TWE 4 7.Os 8.Sh NAME 9.Nm twe 10.Nd 3ware 5000/6000/7000/8000 series PATA/SATA RAID controller 11.Sh SYNOPSIS 12.Cd "twe* at pci?" 13.Cd "scsibus* at twe?" 14.Sh DESCRIPTION 15The 16.Nm 17driver provides support for AMCC's 3ware 5000/6000/7000/8000 series PATA/SATA 18RAID adapters. 19These adapters were formerly known as ``3ware Escalade''. 20.Pp 21These controllers support 2, 4, 8, or 12 ATA disk drives and provide RAID 0, 22RAID 1, RAID 5, RAID 10, and JBOD configurations. 23All the RAID set volume management is done via the card's BIOS. 24.Pp 25Even though the card uses ATA drives, this driver makes drives 26and/or RAID sets appear as 27.Xr sd 4 . 28.Pp 29The 30.Nm 31driver supports the following AMCC 3ware PATA/SATA RAID adapters: 32.Pp 33.Tn 5000 series , 34.Tn 6000 series , 35.Tn 7000-2 , 36.Tn 7006-2 , 37.Tn 7500-4LP , 38.Tn 7500-8 , 39.Tn 7500-12 , 40.Tn 7506-4LP , 41.Tn 7506-8 , 42.Tn 7506-12 , 43.Tn 8006-2LP , 44.Tn 8500-4LP , 45.Tn 8500-8 , 46.Tn 8500-12 , 47.Tn 8506-4LP , 48.Tn 8506-8 , 49.Tn 8506-8MI , 50.Tn 8506-12 , and 51.Tn 8506-12MI . 52.Sh SEE ALSO 53.Xr intro 4 , 54.Xr pci 4 , 55.Xr scsi 4 , 56.Xr sd 4 57.Sh HISTORY 58The 59.Nm 60driver first appeared in 61.Ox 2.8 . 62.Sh AUTHORS 63.An -nosplit 64The 65.Nm 66driver was written by 67.An Michael Shalayeff Aq mickey@openbsd.org , 68inspired by the 69.Fx 70driver by 71.An Mike Smith Aq msmith@freebsd.org . 72.Sh BUGS 73The card's BIOS seems to conflict with some other disk controllers 74which have their own BIOS, if such devices are configured earlier 75than this one. 76To avoid this situation, place 77.Nm 78cards in the lowest numbered slot before other SCSI or RAID disk controllers. 79.Pp 80The current 3ware firmware is known to fail if a redundant configuration 81is selected (RAID1 or RAID10) and the array is heavily used 82(e.g. installation) before the controller has finished initializing the array. 83In this case, create the array, boot the installation media, and 84leave the array idle until all controller activity has ceased. 85.Pp 86None of the volume management or monitoring functions provided by the 87card's firmware are supported due to the fact that information 88on these functions is not public. 89