Re: 2T for i386 OT
Hi, On Sun, Sep 03, 2000 at 11:36:25PM +0200, Andrea Ferraris wrote: > > I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware > > kit for an ftp site very soon. Its very cheap and its very fast. UDMA > with > > one disk per channel and the controller doing some of the work. > > > > All it lacks is hot swap. > > I also planned a thing like that for some more modest servers > (only some ten GB), the question is with wich filesystem? Any will work. Which one is best will depend on your workload as much as anything else. ext2 still does pretty well at handling large filesystems, but it does not scale to very large directories and XFS is incredibly efficient at large files. --Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386 OT
Hi, On Sun, Sep 03, 2000 at 11:36:25PM +0200, Andrea Ferraris wrote: I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit for an ftp site very soon. Its very cheap and its very fast. UDMA with one disk per channel and the controller doing some of the work. All it lacks is hot swap. I also planned a thing like that for some more modest servers (only some ten GB), the question is with wich filesystem? Any will work. Which one is best will depend on your workload as much as anything else. ext2 still does pretty well at handling large filesystems, but it does not scale to very large directories and XFS is incredibly efficient at large files. --Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386 OT
Sorry for the OT, but I'm really interested on the subject. >>>You might be able to do that with hardware IDE raid controllers and >>> the like such as the 3ware 8 port cards, or scsi raid controllers and then run >>> ext3 or reiserfs. > > > > If you're building a 2TB array, you're not gonna do it with bloody IDE > > hardware. (I hope you're joking.) > > I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware > kit for an ftp site very soon. Its very cheap and its very fast. UDMA with > one disk per channel and the controller doing some of the work. > > All it lacks is hot swap. I also planned a thing like that for some more modest servers (only some ten GB), the question is with wich filesystem? For my needs I think that also ext2 can do the job, but I'm looking for advice for something better and at now I don't think that ext3 could be the answer. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
On Thu, Aug 31, 2000 at 07:46:49PM +0100, Alan Cox wrote: > > >You might be able to do that with hardware IDE raid controllers and the like > > >such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 > > >or reiserfs. > > > > If you're building a 2TB array, you're not gonna do it with bloody IDE > > hardware. (I hope you're joking.) > > I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit > for an ftp site very soon. Its very cheap and its very fast. UDMA with > one disk per channel and the controller doing some of the work. > > All it lacks is hot swap. I think that may be in the works... -dg -- David Gould [EMAIL PROTECTED] SuSE, Inc., 580 2cd St. #210, Oakland, CA 94607 510.628.3380 No team manager will tell you this; but they all want to see you come walking back into the pits sometimes, carrying the steering wheel.-- Mario Andretti - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
On Thu, Aug 31, 2000 at 07:46:49PM +0100, Alan Cox wrote: You might be able to do that with hardware IDE raid controllers and the like such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 or reiserfs. If you're building a 2TB array, you're not gonna do it with bloody IDE hardware. (I hope you're joking.) I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit for an ftp site very soon. Its very cheap and its very fast. UDMA with one disk per channel and the controller doing some of the work. All it lacks is hot swap. I think that may be in the works... -dg -- David Gould [EMAIL PROTECTED] SuSE, Inc., 580 2cd St. #210, Oakland, CA 94607 510.628.3380 No team manager will tell you this; but they all want to see you come walking back into the pits sometimes, carrying the steering wheel.-- Mario Andretti - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
In article <[EMAIL PROTECTED]>, Ricky Beam <[EMAIL PROTECTED]> wrote: > If you're building a 2TB array, you're not gonna do it with bloody IDE > hardware. (I hope you're joking.) The big problem with IDE is trying to find raid 5 that works with 8 or more disks, raid 5 with 4 disks wastes too much. And the 18 inch cable lengths make it hard to house the disks. At least with LVD you can have long cables. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
The latest firmware for the 3ware 5000 family of controllers - Escalade 5.1 - allows for hotswap using standard ide removable drive bays. I was already using ide removable drive bays to reduce downtime in case i needed to do maintenance, but now the worry is gone if it works as they advertise. Check the pdf included with the drivers for Linux for more information. Pedro Pedro On 31 Aug 2000, at 16:16, Stephen Lee wrote: > Alan Cox <[EMAIL PROTECTED]> wrote: > > I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit > > for an ftp site very soon. Its very cheap and its very fast. UDMA with > > one disk per channel and the controller doing some of the work. > > > > All it lacks is hot swap. > > I wonder if it is possible to have the manufacturers agree on a common >electrical/physical standa rd for IDE hot-swap connector, like SCA for SCSI. > Say, being able to use standard enclosures that is compatible with different >manufacturer's disks , instead of those 5 inch bay tray hacks that are big and not compatible to each other. > > Stephen > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to [EMAIL PROTECTED] > Please read the FAQ at http://www.tux.org/lkml/ > - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
> > >such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 > > >or reiserfs. > > If you're building a 2TB array, you're not gonna do it with bloody IDE > > hardware. (I hope you're joking.) On Thu, Aug 31, 2000 at 07:46:49PM +0100, Alan Cox wrote: > I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit > for an ftp site very soon. Its very cheap and its very fast. UDMA with > one disk per channel and the controller doing some of the work. > > All it lacks is hot swap. 3ware Escalade 6400/6800 have a hot swap capability. My experience with 3ware controllers has been very good. The company has been very responsive to bugs in the linux driver. RAID10 is cool. striping and then mirroring. They are definitely fast and cheap. Though don't tell anyone about them. If the demand goes up much more, they'll start raising the price. 8-) -- Brian Litzinger <[EMAIL PROTECTED]> Copyright (c) 2000 By Brian Litzinger, All Rights Reserved - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
On Thu, 31 Aug 2000, Alan Cox wrote: > > >You might be able to do that with hardware IDE raid controllers and the like > > >such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 > > >or reiserfs. > > > > If you're building a 2TB array, you're not gonna do it with bloody IDE > > hardware. (I hope you're joking.) > > I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit > for an ftp site very soon. Its very cheap and its very fast. UDMA with > one disk per channel and the controller doing some of the work. > > All it lacks is hot swap. especially when you start considering size and cost requirements ide looks particularly attractive. 75GB scsi disks are 11 platter (ibm) or 12 (seagate) half height drives vs the 75gxp ide (ibm) with has five platters and is 1" high. The 75GB scsi disks are around $1500ea vs the ide which are around $550. so if you're requirements are lots of disk space you can do ide in about 1/2 the physical space and for about 1/3 the cost of a similar scsi implementation, at this time. there are of course still good reasons to go with scsi for various applications, but raw space alone probably isn't one of them. we're bringing up two 675GB stripes shortly to augment an existing 160GB stripe we have. joelja -- Joel Jaeggli [EMAIL PROTECTED] Academic User Services [EMAIL PROTECTED] PGP Key Fingerprint: 1DE9 8FCA 51FB 4195 B42A 9C32 A30D 121E -- It is clear that the arm of criticism cannot replace the criticism of arms. Karl Marx -- Introduction to the critique of Hegel's Philosophy of the right, 1843. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
Alan Cox <[EMAIL PROTECTED]> wrote: > I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit > for an ftp site very soon. Its very cheap and its very fast. UDMA with > one disk per channel and the controller doing some of the work. > > All it lacks is hot swap. I wonder if it is possible to have the manufacturers agree on a common electrical/physical standard for IDE hot-swap connector, like SCA for SCSI. Say, being able to use standard enclosures that is compatible with different manufacturer's disks, instead of those 5 inch bay tray hacks that are big and not compatible to each other. Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
> >You might be able to do that with hardware IDE raid controllers and the like > >such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 > >or reiserfs. > > If you're building a 2TB array, you're not gonna do it with bloody IDE > hardware. (I hope you're joking.) I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit for an ftp site very soon. Its very cheap and its very fast. UDMA with one disk per channel and the controller doing some of the work. All it lacks is hot swap. Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
On Tue, 29 Aug 2000, Alan Cox wrote: >At 2Tb in a single partition you might well start hitting barriers. I think >there is a 1Tb limit per device somewhere. You also need to ask yourself how >long 2Tb would take to fsck on a power failure. Right now 2.2 doesnt support >journalling over software raid so that would stop you using reiserfs and ext3. Who said he was going to use software RAID? For that matter, he didn't say he was going to use ext2 either. (However, that seems to be a logical assumption.) >You might be able to do that with hardware IDE raid controllers and the like >such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 >or reiserfs. If you're building a 2TB array, you're not gonna do it with bloody IDE hardware. (I hope you're joking.) --Ricky PS: fsck is very expensive on a full filesystem. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
Hi! > My boss wants to know if linux can handle a 2Terabyte raid > partition. While I've seen various discussions that indicate that > linux *should* be able to handle an ext2 file system that big, has > anyone actually produced one on an i386 arch? I admit that 32 73 gig > disks are a *lot* of blocks to worry about. Check it yourself. Take nbd server, make it serve sparse file 2TB in size. Easy. [I played this game of mounting 100Gig ext2 at home. Granted, I did have only 10G of real disks ;-). NBD server even has special support so you don't hit 2G limit of older kernels.] Pavel -- I'm [EMAIL PROTECTED] "In my country we have almost anarchy and I don't care." Panos Katsaloulis describing me w.r.t. patents at [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
Hi! My boss wants to know if linux can handle a 2Terabyte raid partition. While I've seen various discussions that indicate that linux *should* be able to handle an ext2 file system that big, has anyone actually produced one on an i386 arch? I admit that 32 73 gig disks are a *lot* of blocks to worry about. Check it yourself. Take nbd server, make it serve sparse file 2TB in size. Easy. [I played this game of mounting 100Gig ext2 at home. Granted, I did have only 10G of real disks ;-). NBD server even has special support so you don't hit 2G limit of older kernels.] Pavel -- I'm [EMAIL PROTECTED] "In my country we have almost anarchy and I don't care." Panos Katsaloulis describing me w.r.t. patents at [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
On Tue, 29 Aug 2000, Alan Cox wrote: At 2Tb in a single partition you might well start hitting barriers. I think there is a 1Tb limit per device somewhere. You also need to ask yourself how long 2Tb would take to fsck on a power failure. Right now 2.2 doesnt support journalling over software raid so that would stop you using reiserfs and ext3. Who said he was going to use software RAID? For that matter, he didn't say he was going to use ext2 either. (However, that seems to be a logical assumption.) You might be able to do that with hardware IDE raid controllers and the like such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 or reiserfs. If you're building a 2TB array, you're not gonna do it with bloody IDE hardware. (I hope you're joking.) --Ricky PS: fsck is very expensive on a full filesystem. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
You might be able to do that with hardware IDE raid controllers and the like such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 or reiserfs. If you're building a 2TB array, you're not gonna do it with bloody IDE hardware. (I hope you're joking.) I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit for an ftp site very soon. Its very cheap and its very fast. UDMA with one disk per channel and the controller doing some of the work. All it lacks is hot swap. Alan - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
Alan Cox [EMAIL PROTECTED] wrote: I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit for an ftp site very soon. Its very cheap and its very fast. UDMA with one disk per channel and the controller doing some of the work. All it lacks is hot swap. I wonder if it is possible to have the manufacturers agree on a common electrical/physical standard for IDE hot-swap connector, like SCA for SCSI. Say, being able to use standard enclosures that is compatible with different manufacturer's disks, instead of those 5 inch bay tray hacks that are big and not compatible to each other. Stephen - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
such as the 3ware 8 port cards, or scsi raid controllers and then run ext3 or reiserfs. If you're building a 2TB array, you're not gonna do it with bloody IDE hardware. (I hope you're joking.) On Thu, Aug 31, 2000 at 07:46:49PM +0100, Alan Cox wrote: I used to think that. Im planning on deploying a 1Tb IDE raid using 3ware kit for an ftp site very soon. Its very cheap and its very fast. UDMA with one disk per channel and the controller doing some of the work. All it lacks is hot swap. 3ware Escalade 6400/6800 have a hot swap capability. My experience with 3ware controllers has been very good. The company has been very responsive to bugs in the linux driver. RAID10 is cool. striping and then mirroring. They are definitely fast and cheap. Though don't tell anyone about them. If the demand goes up much more, they'll start raising the price. 8-) -- Brian Litzinger [EMAIL PROTECTED] Copyright (c) 2000 By Brian Litzinger, All Rights Reserved - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2T for i386
In article [EMAIL PROTECTED], Ricky Beam [EMAIL PROTECTED] wrote: If you're building a 2TB array, you're not gonna do it with bloody IDE hardware. (I hope you're joking.) The big problem with IDE is trying to find raid 5 that works with 8 or more disks, raid 5 with 4 disks wastes too much. And the 18 inch cable lengths make it hard to house the disks. At least with LVD you can have long cables. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
