If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Bridging fc to scsi for NetApp filer backups
I have a couple of Crossroads 10k storage routers that are giving me
nothing but grief. 98% of all issues with the setup are due to these. The setup is: netapp -- brocade switch -- crossroads -- tape drives Idea is simple but implementation has been murder. I'm curious if anyone is using these bridges or has a similar setup and if it's working for you. I have a total of 28 filers but only 15 are fiber attached, rest are 3-way backup. 2 10k bridges with 2x2gb modules and 4 scsi modules in back. Performance blows, every weekend when we run fulls something goes into the weeds, and everytime (but once) it's been the bridge. Thanks. ~JK |
#2
|
|||
|
|||
Performance blows, every weekend when we run fulls something goes into
the weeds, and everytime (but once) it's been the bridge. Please provide us with more details about the problems you have. Rene |
#3
|
|||
|
|||
On Tue, 18 Nov 2003 21:06:09 +0100, "Rene Koehnen-Wiesemes"
wrote: Performance blows, every weekend when we run fulls something goes into the weeds, and everytime (but once) it's been the bridge. Please provide us with more details about the problems you have. Rene Well, they're all over the board but they always start with performance dropping to it's knees. The bridge has very little in the way of online diags so inevitably the solution is reboot the bridge. Everything from buffer overflows to mis-presenting scsi id's. I'm looking more for information from people who already have this sort of setup and what they think of it. Not necessarily a bridge but filers using fiber to backup. Ideally I'd go stright to fiber drives but SDLT has no native fiber yet. ~F |
#4
|
|||
|
|||
We have a filer (R150) that uses fiber to connect to an L700 via a crossroad
bridge (1 Gig 1/f). No problems so far, but we don't have a fiber switch in between, just R150- crossroad.- tape drives Performance averages 18995 KB/s -G "Faeandar" wrote in message ... On Tue, 18 Nov 2003 21:06:09 +0100, "Rene Koehnen-Wiesemes" wrote: Performance blows, every weekend when we run fulls something goes into the weeds, and everytime (but once) it's been the bridge. Please provide us with more details about the problems you have. Rene Well, they're all over the board but they always start with performance dropping to it's knees. The bridge has very little in the way of online diags so inevitably the solution is reboot the bridge. Everything from buffer overflows to mis-presenting scsi id's. I'm looking more for information from people who already have this sort of setup and what they think of it. Not necessarily a bridge but filers using fiber to backup. Ideally I'd go stright to fiber drives but SDLT has no native fiber yet. ~F |
#5
|
|||
|
|||
Is that a per stream rate? How many streams? In all but the first
case the switch has bnever been part of the problem. We do dwdm for some of the filers hence the fc switches. Also, all the local filers won't fit directly onto the bridge. Can you post the firmware version you're using? Are you chaining any drives off the bus? Question bombardment I know, but it's nice to hear someone is able to use it and I'd like to be able to duplicate that.... Thanks. ~F On Wed, 19 Nov 2003 02:13:50 GMT, "Net Worker" wrote: We have a filer (R150) that uses fiber to connect to an L700 via a crossroad bridge (1 Gig 1/f). No problems so far, but we don't have a fiber switch in between, just R150- crossroad.- tape drives Performance averages 18995 KB/s -G "Faeandar" wrote in message .. . On Tue, 18 Nov 2003 21:06:09 +0100, "Rene Koehnen-Wiesemes" wrote: Performance blows, every weekend when we run fulls something goes into the weeds, and everytime (but once) it's been the bridge. Please provide us with more details about the problems you have. Rene Well, they're all over the board but they always start with performance dropping to it's knees. The bridge has very little in the way of online diags so inevitably the solution is reboot the bridge. Everything from buffer overflows to mis-presenting scsi id's. I'm looking more for information from people who already have this sort of setup and what they think of it. Not necessarily a bridge but filers using fiber to backup. Ideally I'd go stright to fiber drives but SDLT has no native fiber yet. ~F |
#6
|
|||
|
|||
"Faeandar" wrote in message ... Is that a per stream rate? How many streams? Yes its per stream. Is that good or can it be tweaked further? We use Netbackup NDMP. not sure if increasing the stream would improve performance, I think 18995 KB/s is near the rated capacity of an LTO drive, (15MB/second native, 30MB/second compressed)? In all but the first case the switch has bnever been part of the problem. We do dwdm for some of the filers hence the fc switches. Also, all the local filers won't fit directly onto the bridge. We don't backup the filers directly, all of them snapvault to the R150 and we then backup the R150 to tapes monthly. Can you post the firmware version you're using? Firmware of FC bridge model: StorageTek SN3250 Router Version: 3.06 2009j Are you chaining any drives off the bus? No. R150 has a FC adaptor connected to one crossroad bridge. which has 2 LTO SCSI LVD drives attached to it in a L700. Robot controlled by the netbackup master server running on solaris. Question bombardment I know, but it's nice to hear someone is able to use it and I'd like to be able to duplicate that.... Thanks. ~F On Wed, 19 Nov 2003 02:13:50 GMT, "Net Worker" wrote: We have a filer (R150) that uses fiber to connect to an L700 via a crossroad bridge (1 Gig 1/f). No problems so far, but we don't have a fiber switch in between, just R150- crossroad.- tape drives Performance averages 18995 KB/s -G "Faeandar" wrote in message .. . On Tue, 18 Nov 2003 21:06:09 +0100, "Rene Koehnen-Wiesemes" wrote: Performance blows, every weekend when we run fulls something goes into the weeds, and everytime (but once) it's been the bridge. Please provide us with more details about the problems you have. Rene Well, they're all over the board but they always start with performance dropping to it's knees. The bridge has very little in the way of online diags so inevitably the solution is reboot the bridge. Everything from buffer overflows to mis-presenting scsi id's. I'm looking more for information from people who already have this sort of setup and what they think of it. Not necessarily a bridge but filers using fiber to backup. Ideally I'd go stright to fiber drives but SDLT has no native fiber yet. ~F |
#7
|
|||
|
|||
Yes its per stream. Is that good or can it be tweaked further? We use Netbackup NDMP. not sure if increasing the stream would improve performance, I think 18995 KB/s is near the rated capacity of an LTO drive, (15MB/second native, 30MB/second compressed)? you're probably near peak performance then, after 15mb/sec it is data dependent. Can you post the firmware version you're using? Firmware of FC bridge model: StorageTek SN3250 Router Version: 3.06 2009j This explains part of it. We have 2 10k Crossroads and 1 SN3250 (rebadged Xroads). The 3250 ha been much less problematic, it's the 10k's that are killing me. I believe it has to do with the load but still haven't been able to confirm that. Thanks for the info though, and glad to hear your setup is working well. ~F Are you chaining any drives off the bus? No. R150 has a FC adaptor connected to one crossroad bridge. which has 2 LTO SCSI LVD drives attached to it in a L700. Robot controlled by the netbackup master server running on solaris. Question bombardment I know, but it's nice to hear someone is able to use it and I'd like to be able to duplicate that.... Thanks. ~F On Wed, 19 Nov 2003 02:13:50 GMT, "Net Worker" wrote: We have a filer (R150) that uses fiber to connect to an L700 via a crossroad bridge (1 Gig 1/f). No problems so far, but we don't have a fiber switch in between, just R150- crossroad.- tape drives Performance averages 18995 KB/s -G "Faeandar" wrote in message .. . On Tue, 18 Nov 2003 21:06:09 +0100, "Rene Koehnen-Wiesemes" wrote: Performance blows, every weekend when we run fulls something goes into the weeds, and everytime (but once) it's been the bridge. Please provide us with more details about the problems you have. Rene Well, they're all over the board but they always start with performance dropping to it's knees. The bridge has very little in the way of online diags so inevitably the solution is reboot the bridge. Everything from buffer overflows to mis-presenting scsi id's. I'm looking more for information from people who already have this sort of setup and what they think of it. Not necessarily a bridge but filers using fiber to backup. Ideally I'd go stright to fiber drives but SDLT has no native fiber yet. ~F |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Looking for SCSI Recommendations | John-Paul Stewart | Asus Motherboards | 0 | February 22nd 05 04:22 PM |
15K rpm SCSI-disk | Ronny Mandal | General | 26 | December 8th 04 08:04 PM |
Newbie Question re hardware vs software RAID | Gilgamesh | General | 44 | November 22nd 04 10:52 PM |
asus p2b-ds and scsi (from a scsi newbie) | [email protected] | Asus Motherboards | 8 | May 30th 04 09:43 AM |
120 gb is the Largest hard drive I can put in my 4550? | David H. Lipman | Dell Computers | 65 | December 11th 03 01:51 PM |