iSCSI support
Hi, My company is a storage RAID system company. There is one customer ask iSCSI solution with my production of my company with FreeBSD 6.1. But I found some information in the Internet, the iSCSI full support on FreeBSD is 7.0. Is it mean FreeBSD 6.1 can’t support iSCSI? BR, Jeff ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
Jeff Chen - PTT 陳龍焜 wrote: Hi, My company is a storage RAID system company. There is one customer ask iSCSI solution with my production of my company with FreeBSD 6.1. But I found some information in the Internet, the iSCSI full support on FreeBSD is 7.0. Is it mean FreeBSD 6.1 can’t support iSCSI? Yes, the iSCSI initiator is in FreeBSD 7.x. Soon, FreeBSD 7.1 will be released. signature.asc Description: OpenPGP digital signature
Re: iSCSI support
can't be iSCSI client, but iscsi-target is userlevel app, you may run on any FreeBSD (most probably under any unix). ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
Jeff Chen - PTT 陳龍焜 wrote: Hi, My company is a storage RAID system company. There is one customer ask iSCSI solution with my production of my company with FreeBSD 6.1. But I found some information in the Internet, the iSCSI full support on FreeBSD is 7.0. Is it mean FreeBSD 6.1 can’t support iSCSI? BR, Jeff ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] There are some patches around to run it on 6.2 (maybe all of 6.x) but the performance isn't very good. I used this on 6.2 and it did work: ftp://ftp.cs.huji.ac.il/users/danny/freebsd/iscsi-2.0.92.tar.gz This looks like a more recent version (tho no guarantee it will work on 6.x): ftp://ftp.cs.huji.ac.il/users/danny/freebsd/iscsi-2.1.tar.gz ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
iSCSI support..
Freebsd ever hope to have a stable supported iscsi layer? Thanks for any hints. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support..
On Thu, Oct 12, 2006 at 08:37:27PM -0700, Jeff Mohler wrote: Freebsd ever hope to have a stable supported iscsi layer? Thanks for any hints. I plan to starting testing FreeBSD 6.2 (when it is released) and iSCSI within the next few weeks. We have seattled on an HP DL360 with a Broadcom NIC talking to a NetApp. This will be our first pass at iSCSI. Should be intresting. Josef -- Josef Grosch | Another day closer to a | FreeBSD 6.1 [EMAIL PROTECTED] | Micro$oft free world | Berkeley, Ca. pgpLRYeJnNfV8.pgp Description: PGP signature
Re: iSCSI support
[EMAIL PROTECTED] wrote: I have 3 datacentres connected by 12 core gig fibre (only using one pair at the moment, but the fibre is there for future use) each connected directly to the others. I want a system that I can start off with one disk server in one datacentre, and then step it up to have mirrored disk servers in each of the other datacentre's which are kept up to date in real time and can take over instantaneously if one of the others fails. It must also be scalable (non destructive resizing of the system) and support both linux and FreeBSD. I am willing to wait for this, but can anyone point me in the right direction. iSCSI seems to be it, but I'm not sure. all, don't get network attached storage confused with network attached filesystem confused with clustered filesystem. if you go for fibre channel network attached storage, it dosen't matter if the host and storage array are in the same cabinet, across the room or in different data centers. if your requirement is only to have one host up at any time then it can raid1 3way mirror over the sites. of course it gets really messy when one of the links goes down and you have to decide if it really has and not just the way your testing, who becomes master and enforce it so there's no corruption (if the down host continues writing). you mention multiple cores and the datacenters connectected in a ring, which means you can multipath in both directions of the loop. don't know of any fc multipathing for freebsd. doing this in iscsi will be a lot cheaper. switches will be gigE with fibre uplinks to connect the sites. targets and initiators can be regular boxes with more/less/none directly attached disks, all connected via gig nics. multipathing/link failures are handled by routing daemons/protocols which already exist. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
from people. ICBW but to me it seems that iSCSI is like a distributed NFS backend. You can store the data on multiple devices, in multiple forms (as long as they all talk iSCSI). You can also have two storage sites (geographically separate) connected by fibre and use those for storage. same as NFS. while with iSCSI you have exported whole devices that can't be really shared with ease. and 100 times more expensive of course that just a cheap PC with cheap IDE drives.. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
In the last episode (Nov 22), Wojciech Puchar said: from people. ICBW but to me it seems that iSCSI is like a distributed NFS backend. You can store the data on multiple devices, in multiple forms (as long as they all talk iSCSI). You can also have two storage sites (geographically separate) connected by fibre and use those for storage. same as NFS. while with iSCSI you have exported whole devices that can't be really shared with ease. and 100 times more expensive of course that just a cheap PC with cheap IDE drives.. Whole devices accessed directly can be a lot faster than NFS, since the client doesn't have to constantly ask the NFS server whether the file it's currently accessing has changed. And when a cheap IDE in one of the 100 servers in your server room goes out, you have to find the server, figure out which drives it has in it and which RAID controller it has, go to your spares cabinet and get the right spare, swap the drive, load your raid management software, and rebuild. Unless you have a hotspare in each computer, but that's quite a lot of wasted disks. With a iSCSI/FC SAN setup, you probably have a couple hotspares configured in your array already and it's rebuilt automatically. If a server needs a few more TB or storage, simply create a new LUN and make it visible to the server. If you want to set up failover (or are running an OS that has clustered filesystems), make one LUN visible to multiple machines. There's also nothing that says the disks behind the iSCSI array can't be cheap IDE drives. -- Dan Nelson [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
just a cheap PC with cheap IDE drives.. Whole devices accessed directly can be a lot faster than NFS, since the client doesn't have to constantly ask the NFS server whether the file it's currently accessing has changed. any problem to add such option to NFS?? with iSCSI you just CAN't do it. anyway this asking isn't bandwidth intensive, while adds delays. and it may affect of transfer speed for ONE process reading one file, but not multiuser system. And when a cheap IDE in one of the 100 servers in your server room goes out, you have to find the server, figure out which drives it has in it and which RAID controller it has, go to your spares cabinet and get the if company having this 100 servers (must be really huge company or really bad software using to need 100 servers) and their IT managers don't know what it where and don't know few basic unix command to localize the problem source - then here is a problem, and any kind of SAN won't fix it. the real fix is to employ someone more competent. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
Wojciech Puchar wrote: Whole devices accessed directly can be a lot faster than NFS, since the client doesn't have to constantly ask the NFS server whether the file it's currently accessing has changed. any problem to add such option to NFS?? with iSCSI you just CAN't do it. anyway this asking isn't bandwidth intensive, while adds delays. and it may affect of transfer speed for ONE process reading one file, but not multiuser system. Regardless of whether iSCSI is any good, it's a common access method for SAN devices, and from what I've been told, may be the *only* access method. So in heterogenous (read windows dominated) environment where you want to be able to access these things, an iSCSI initiator for FreeBSD can only be a good thing. --Alex ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
RE: iSCSI support
iSCSI enables block access to drives over IP. There is only so much you can do with NFS and SMB. -Original Message- From: [EMAIL PROTECTED] [mailto:owner-freebsd- [EMAIL PROTECTED] On Behalf Of Wojciech Puchar Sent: November 21, 2005 6:25 PM To: Josh Endries Cc: freebsd-questions@freebsd.org Subject: Re: iSCSI support and growing. I'm currently looking at a Coraid AoE (ATA-over-Ethernet) solution since it seems to have good support for FreeBSD and Windows drivers in the works. On the other hand, iSCSI has Windows support and FreeBSD in the works. stupid question: can anyone explain me the sense and adventages of iSCSI compared to say NFS? for me it's just some more layer to take lots of $$$ from people. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions- [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
affect of transfer speed for ONE process reading one file, but not multiuser system. Regardless of whether iSCSI is any good, it's a common access method for SAN devices, and from what I've been told, may be the *only* access method. So AFAIK it's SCSI over FC, SCSI over IP was next probably to eliminate expensive FC, that was invented first to make things more expensive. looks like politicians - first they get 1000$, then give 100$ back and say how much they gave ;) anyway - for already existing iSCSI devices driver won't hurt of course, but i'm sure nobody that understand things won't invest in such technologies. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
On Tue, Nov 22, 2005 at 07:13:45PM +0100, Wojciech Puchar wrote: anyway - for already existing iSCSI devices driver won't hurt of course, but i'm sure nobody that understand things won't invest in such technologies. I've been looking at iSCSI, but if someone can suggest a better alternative I'd be happy to use it, as I haven't bought anything yet. I have 3 datacentres connected by 12 core gig fibre (only using one pair at the moment, but the fibre is there for future use) each connected directly to the others. I want a system that I can start off with one disk server in one datacentre, and then step it up to have mirrored disk servers in each of the other datacentre's which are kept up to date in real time and can take over instantaneously if one of the others fails. It must also be scalable (non destructive resizing of the system) and support both linux and FreeBSD. I am willing to wait for this, but can anyone point me in the right direction. iSCSI seems to be it, but I'm not sure. -John ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
iSCSI support
I read in the status report that work is being done on iSCSI, which is awesome. We're putting in a SAN at work, starting at probably 8 TB and growing. I'm currently looking at a Coraid AoE (ATA-over-Ethernet) solution since it seems to have good support for FreeBSD and Windows drivers in the works. On the other hand, iSCSI has Windows support and FreeBSD in the works. Has anyone out there had experience with either iSCSI or Coraid/AoE on FreeBSD for a SAN? I'd like to know what NICs/HBAs and stuff works well and what doesn't, if anyone has experience with it. Thanks, Josh ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
and growing. I'm currently looking at a Coraid AoE (ATA-over-Ethernet) solution since it seems to have good support for FreeBSD and Windows drivers in the works. On the other hand, iSCSI has Windows support and FreeBSD in the works. stupid question: can anyone explain me the sense and adventages of iSCSI compared to say NFS? for me it's just some more layer to take lots of $$$ from people. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support
On Tue, Nov 22, 2005 at 12:24:49AM +0100, Wojciech Puchar wrote: and growing. I'm currently looking at a Coraid AoE (ATA-over-Ethernet) solution since it seems to have good support for FreeBSD and Windows drivers in the works. On the other hand, iSCSI has Windows support and FreeBSD in the works. stupid question: can anyone explain me the sense and adventages of iSCSI compared to say NFS? for me it's just some more layer to take lots of $$$ from people. ICBW but to me it seems that iSCSI is like a distributed NFS backend. You can store the data on multiple devices, in multiple forms (as long as they all talk iSCSI). You can also have two storage sites (geographically separate) connected by fibre and use those for storage. -John ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
iSCSI support?
What version(s) of FreeBSD, if any, support iSCSI storage connectivity? Is there an open source FreeBSD iSCSI driver which would work with ethernet adapters listed on the hardware compatibility lists? Do FreeBSD drivers exist for iSCSI HBAs by Adaptec, Alacritech, Qlogic and/or Intel? Any relevent information would be most helpful. Thanks! Sam Farmer Systems Engineer Cambridge Computer Services, Inc. Artists in Data Storage Tel: 781-250-3212 Fax: 781-250-3312 www.cambridgecomputer.com [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support?
In the last episode (Feb 28), Sam Farmer said: What version(s) of FreeBSD, if any, support iSCSI storage connectivity? Is there an open source FreeBSD iSCSI driver which would work with ethernet adapters listed on the hardware compatibility lists? Do FreeBSD drivers exist for iSCSI HBAs by Adaptec, Alacritech, Qlogic and/or Intel? Any relevent information would be most helpful. Thanks! You're in luck ): Last week, Danny Braniss posted that he was looking for testers for an iSCSI initiator (for regular NICs) that he just finished. http://lists.freebsd.org/pipermail/freebsd-scsi/2005-February/001740.html -- Dan Nelson [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
iSCSI support in FreeBSD?
Is there planned iSCSI support in FreeBSD 4 or 5. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: iSCSI support in FreeBSD?
--- Forrest Aldrich [EMAIL PROTECTED] wrote: Is there planned iSCSI support in FreeBSD 4 or 5. Well... no one else has responded. Considering I have nil experience, all I can do is offer links. http://docs.FreeBSD.org/cgi/mid.cgi?20040405125530.14f97d7a And you can navigate to... http://www.freebsd.org/cgi/man.cgi for an updated man entry regarding ISP (specific to your chosen version of FreeBSD). Good luck. K. Greenwood __ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
