1.\" $OpenBSD: twe.4,v 1.29 2014/11/15 14:41:02 bentley Exp $ 2.\" 3.\" Michael Shalayeff, 2000. Public Domain. 4.\" 5.Dd $Mdocdate: November 15 2014 $ 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.Sh DESCRIPTION 14The 15.Nm 16driver provides support for AMCC's 3ware 5000/6000/7000/8000 series PATA/SATA 17RAID adapters. 18These adapters were formerly known as 19.Dq 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 , 51and 52.Tn 8506-12MI . 53.Sh SEE ALSO 54.Xr intro 4 , 55.Xr pci 4 , 56.Xr scsi 4 , 57.Xr sd 4 58.Sh HISTORY 59The 60.Nm 61driver first appeared in 62.Ox 2.8 . 63.Sh AUTHORS 64.An -nosplit 65The 66.Nm 67driver was written by 68.An Michael Shalayeff Aq Mt mickey@openbsd.org , 69inspired by the 70.Fx 71driver by 72.An Mike Smith Aq Mt msmith@freebsd.org . 73.Sh BUGS 74The card's BIOS seems to conflict with some other disk controllers 75which have their own BIOS, if such devices are configured earlier 76than this one. 77To avoid this situation, place 78.Nm 79cards in the lowest numbered slot before other SCSI or RAID disk controllers. 80.Pp 81The current 3ware firmware is known to fail if a redundant configuration 82is selected (RAID1 or RAID10) and the array is heavily used 83(e.g. installation) before the controller has finished initializing the array. 84In this case, create the array, boot the installation media, and 85leave the array idle until all controller activity has ceased. 86.Pp 87None of the volume management or monitoring functions provided by the 88card's firmware are supported due to the fact that information 89on these functions is not public. 90