| ccdconfig.8 (ae919cce4a5ec3af4044dbb354a42fb301ae245f) | ccdconfig.8 (b94231dacac553c3cfd4d0917f87231a65727bf2) |
|---|---|
| 1.\" $NetBSD: ccdconfig.8,v 1.1.2.1 1995/11/11 02:43:33 thorpej Exp $ 2.\" 3.\" Copyright (c) 1995 Jason R. Thorpe. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: --- 168 unchanged lines hidden (view full) --- 177An error on a ccd disk is usually unrecoverable unless you are using the 178mirroring option. But mirroring has its own perils: It assumes that 179both copies of the data at any given sector are the same. This holds true 180until a write error occurs or until you replace either side of the mirror. 181.Nm Ccd 182uses a poor-man's mirroring implementation. It works well enough that if 183you begin to get disk errors you should be able to backup the ccd disk, 184replace the broken hardware, and then regenerate the ccd disk. If you need | 1.\" $NetBSD: ccdconfig.8,v 1.1.2.1 1995/11/11 02:43:33 thorpej Exp $ 2.\" 3.\" Copyright (c) 1995 Jason R. Thorpe. 4.\" All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: --- 168 unchanged lines hidden (view full) --- 177An error on a ccd disk is usually unrecoverable unless you are using the 178mirroring option. But mirroring has its own perils: It assumes that 179both copies of the data at any given sector are the same. This holds true 180until a write error occurs or until you replace either side of the mirror. 181.Nm Ccd 182uses a poor-man's mirroring implementation. It works well enough that if 183you begin to get disk errors you should be able to backup the ccd disk, 184replace the broken hardware, and then regenerate the ccd disk. If you need |
| 185more then this you should look into external hardware RAID SCSI boxes, | 185more than this you should look into external hardware RAID SCSI boxes, |
| 186RAID controllers such as the 187.Nm dpt 188controller, or software RAID systems such as 189.Nm vinum . 190.Sh FILES 191.Bl -tag -width /etc/ccd.conf -compact 192.It Pa /etc/ccd.conf 193default ccd configuration file 194.El 195.Sh SEE ALSO 196.Xr ccd 4 , 197.Xr rc 8 , 198.Xr vinum 8 199.Sh HISTORY 200The 201.Nm 202command first appeared in 203.Nx 1.0a . | 186RAID controllers such as the 187.Nm dpt 188controller, or software RAID systems such as 189.Nm vinum . 190.Sh FILES 191.Bl -tag -width /etc/ccd.conf -compact 192.It Pa /etc/ccd.conf 193default ccd configuration file 194.El 195.Sh SEE ALSO 196.Xr ccd 4 , 197.Xr rc 8 , 198.Xr vinum 8 199.Sh HISTORY 200The 201.Nm 202command first appeared in 203.Nx 1.0a . |