Re: [gentoo-user] [OT] external conceptronic box
Jorge Almeida wrote: I'm thinking of purchasing a Conceptronic External USB 2.0 Hard Disk Box 3.5 (CHD3U), together with a IDE hd, to use mostly for backups. Anyone has any experience with this? The main question is: Should I worry about drivers? Every USB (2.0) disk/stick is covered by the USB mass-storage driver. You'll need: CONFIG_USB_EHCI_HCD (USB 2.0) CONFIG_USB_STORAGE (mass-storage) CONFIG_BLK_DEV_SD (SCSI-disk) After connecting the disk, check dmesg to see which device has been created. Most probably it's /dev/sda, if you don't have any other SCSI/USB disks. (Sorry for the OT'ness, but it _is_ to be used with gentoo :)) Don't worry. gentoo-user is used to it ;-) Christoph -- echo mailto: NOSPAM !#$.'*'|sed 's. ..'|tr * !#:2 [EMAIL PROTECTED] -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] [OT] external conceptronic box
On Wed, 26 Oct 2005, Christoph Gysin wrote: Jorge Almeida wrote: I'm thinking of purchasing a Conceptronic External USB 2.0 Hard Disk Box 3.5 (CHD3U), together with a IDE hd, to use mostly for backups. Anyone has any experience with this? The main question is: Should I worry about drivers? Every USB (2.0) disk/stick is covered by the USB mass-storage driver. You'll Great! need: CONFIG_USB_EHCI_HCD (USB 2.0) CONFIG_USB_STORAGE (mass-storage) CONFIG_BLK_DEV_SD (SCSI-disk) Does the latter mean that some scsi emulation is used? Is there some documentation about it that I should know of? After connecting the disk, check dmesg to see which device has been created. Most probably it's /dev/sda, if you don't have any other SCSI/USB disks. Thanks. Jorge -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] [OT] external conceptronic box
Jorge Almeida wrote: I'm thinking of purchasing a Conceptronic External USB 2.0 Hard Disk Box 3.5 (CHD3U), together with a IDE hd, to use mostly for backups. Anyone has any experience with this? The main question is: Should I worry about drivers? (Sorry for the OT'ness, but it _is_ to be used with gentoo :)) This is how I make my backups currently, and it works perfectly. One thing: you must be very careful of the power supply and requirements of the HD. I have several models of external chassis that provide 12V 1.7A of power, and this is insufficient for modern (and _large_) disks, and will result in disk read and write errors. So I highly recommend a chassis that uses a power supply that provides separate 12V and 5V inputs. Judging from the pictures of the CHD3U I found, it seems to support this, so it should be a good choice. -Richard -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] [OT] external conceptronic box
Jorge Almeida wrote: CONFIG_USB_EHCI_HCD (USB 2.0) CONFIG_USB_STORAGE (mass-storage) CONFIG_BLK_DEV_SD (SCSI-disk) Does the latter mean that some scsi emulation is used? Well, yes, the USB mass-storge driver emulates a SCSI disk. But this is not the same as the SCSI emulation used for IDE drives. Is there some documentation about it that I should know of? There's not much more to know about setting up a USB disk. Enable the options mentioned above in your kernel config and attach the disk. Feel free to post again if you experience problems. Christoph -- echo mailto: NOSPAM !#$.'*'|sed 's. ..'|tr * !#:2 [EMAIL PROTECTED] -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] [OT] external conceptronic box
On Wed, 26 Oct 2005, Christoph Gysin wrote: Jorge Almeida wrote: CONFIG_USB_EHCI_HCD (USB 2.0) CONFIG_USB_STORAGE (mass-storage) CONFIG_BLK_DEV_SD (SCSI-disk) Does the latter mean that some scsi emulation is used? Well, yes, the USB mass-storge driver emulates a SCSI disk. But this is not the same as the SCSI emulation used for IDE drives. Is there some documentation about it that I should know of? There's not much more to know about setting up a USB disk. Enable the options mentioned above in your kernel config and attach the disk. Feel free to post again if you experience problems. Thanks again. Next step is buying the thing. Jorge -- gentoo-user@gentoo.org mailing list
Re: [gentoo-user] [OT] external conceptronic box
On Wed, 26 Oct 2005, Richard Fish wrote: One thing: you must be very careful of the power supply and requirements of the HD. I have several models of external chassis that provide 12V 1.7A of power, and this is insufficient for modern (and _large_) disks, and will result in disk read and write errors. So I highly recommend a chassis that uses a power supply that provides separate 12V and 5V inputs. Judging from the pictures of the CHD3U I found, it seems to support this, so it should be a good choice. You mean 12V and 5A, right? I've been to the shop and the case doesn't supply any info about delivered power. It does say it supports hds up to 400GB, though. (I'm planning to buy a 250GB Samsung, which seems to have a good capacity/price ratio.) The Conceptronic site is not more helpful. I suppose it will be buy and try. Cheers, Jorge -- gentoo-user@gentoo.org mailing list
