Kevin Keane wrote: >> -----Original Message----- >> From: John Drescher [mailto:dresche...@gmail.com] >> Sent: Friday, November 13, 2009 5:06 AM >> To: Bruno Friedmann; bacula-users >> Subject: Re: [Bacula-users] eSATA / USB disks as media for Bacula >> >>> Just an add to the previous great comments. >>> >>> If you envisage to use e-sata, check that your chipset/bios support >> hot-replace/add. >>> It's working nicely with laptop, but not always for a vaste majority >> of "cheap" motherboard. >>> Mine a Asus M2N-Pro support e-sata : but only on cold restart >> (jmicron and 2.6.27 kernel) >>> Sadly I've to use the usb-2 ... >> I am pretty sure the regular SATA ports on this board (nvidia chipset >> ones) support hot swap. I say that because I have 3 or 4 of my linux >> raid servers at work using M2Ns and I have definitely hot swapped >> drives on them. > > I am by no means an eSATA expert, but my understanding is that the real issue > is IDE emulation and (Windows) driver support. > > Based on that understanding - which could be wrong: > > IDE mode = no hot swapping > AHCI mode = hot swapping > > At least assuming that AHCI is implemented according to proper specs - which > may or may not be true for cheap motherboards. > > AHCI needs to be enabled in the BIOS, and ALSO needs to be supported by the > hard disk driver in your operating system. Windows 7 and I believe also Vista > have AHCI-capable drivers, but Windows XP doesn't out of the box. > > In the Linux world, I really don't know - I believe that it would be slightly > ahead of the curve and probably have a bit better AHCI support. > > Unfortunately "I have hot-swapped drives" is not a reliable measure. It is > entirely possible that hotswapping worked purely by chance but would break > the next time you try it. > > For information mine is a Board Info: #2
Manufacturer: "ASUSTeK Computer INC." Product: "M2N-SLI DELUXE" Version: "1.XX" which have 6 nv_sata ahci inside "nVidia MCP55 SATA Controller" ( 2x320Gb WDC system & data in raid 1 + 4 1TB samsung Raid-edition in raid 10 for bacula storage ) otherwise the external e-sata is mapped with a jmicron controller ( which doesn't really work actually with the 2.6.27 kernel ) perhaps it would work more nicely with the new 2.6.31 ... for info 33: PCI 200.0: 0106 SATA controller (AHCI 1.0) [Created at pci.318] UDI: /org/freedesktop/Hal/devices/pci_197b_2363 Unique ID: B35A.9XBu8y_VUsD Parent ID: vuMS.D2XgYo_AJe1 SysFS ID: /devices/pci0000:00/0000:00:0e.0/0000:02:00.0 SysFS BusID: 0000:02:00.0 Hardware Class: storage Model: "ASUSTeK P5B [JMB363]" Vendor: pci 0x197b "JMicron Technologies, Inc." Device: pci 0x2363 "JMicron 20360/20363 AHCI Controller" SubVendor: pci 0x1043 "ASUSTeK Computer Inc." SubDevice: pci 0x81e4 "P5B [JMB363]" Revision: 0x03 Driver: "ahci" Driver Modules: "ahci" Memory Range: 0xfddfe000-0xfddfffff (rw,non-prefetchable) Memory Range: 0xfdde0000-0xfddeffff (ro,prefetchable,disabled) IRQ: 16 (19116813 events) Module Alias: "pci:v0000197Bd00002363sv00001043sd000081E4bc01sc06i01" Driver Info #0: Driver Status: ahci is active Driver Activation Cmd: "modprobe ahci" Config Status: cfg=no, avail=yes, need=no, active=unknown Attached to: #25 (PCI bridge) -- Bruno Friedmann ------------------------------------------------------------------------------ Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day trial. Simplify your report design, integration and deployment - and focus on what you do best, core application coding. Discover what's new with Crystal Reports now. http://p.sf.net/sfu/bobj-july _______________________________________________ Bacula-users mailing list Bacula-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bacula-users