Re: NFS- SAN - FreeBSD

2009-11-20 Thread patrick
Hi Grant,

I'm in a similar situation to where you were in July, and I was
wondering what route you ended up going?

Patrick


On Tue, Jul 21, 2009 at 4:42 PM, Grant Peel  wrote:
> Chris,
>
> Again, thanks for the info.
>
> I only have one server with a PERC (raid) card installed, and I beleive it
> is an older PERC 3 DCI, and doubt it would do the job. I would not be able
> to add more PERC cards to the other machines.
>
> I am looking to have the connections all done via Ethernet. Again, the
> connections would be local (device to my switch, switch to the individual
> servers).
>
> Does this mean I should be considering iSCSI, or, since the connections will
> all be on a local network, that I can continue to consider NFS?
>
> Any takers?
>
> -Grant
>
> - Original Message - From: "Christopher J. Umina"
> 
> To: "Grant Peel" 
> Cc: 
> Sent: Tuesday, July 21, 2009 8:01 PM
> Subject: Re: NFS- SAN - FreeBSD
>
>
>> Grant,
>>
>> DAS = Direct-Attached Storage, sorry to be confusing.
>>
>> I cannot personally speak to the performance of FreeBSD's NFS, but I
>> wouldn't expect it to be the bottleneck in the situation described.  Maybe
>> others with more experience could chime in on this topic.
>>
>> The way to use a DAS is to connect the DAS to a server with an external
>> SAS cable (or two).  The PERC6/E controller you would need inside the server
>> is very well supported in FreeBSD.  The DAS system would basically act the
>> same as internal disks would act (in the case of the MD1000).  Of course
>> you'll want to check with Dell before you make any purchases to be positive
>> that your hardware will all communicate nicely, as I'm no Dell salesperson.
>>
>> Depending on how large of an array you plan to make (if larger than 2TB)
>> you may have to investigate gpart/gpt to partition correctly, but that's
>> quite simple in my experience.
>>
>> Chris
>>
>> Grant Peel wrote:
>>>
>>> Chris,
>>>
>>> Thanks for the insight!
>>>
>>> I will defineately investigate that DAS ... although I am not (yet) sure
>>> what the acronym means, I am sure it is something akin to "Direct Access
>>> SCSI".
>>>
>>> You are quite right, I would like to use NFS to connect the device to the
>>> 6 servers I have, again, it would be only hosting the /home partition for
>>> each of them. Do you know if there would be any NFS I/O slowdowns using it
>>> in that fassion? Would freebsd support (on the storage device) that many
>>> connections?
>>>
>>> Also, do the Dell DAS machines run with FreeBSD?
>>>
>>> Also, from you you explained, I doubt I really need the versatility of
>>> the SAN at this point, or in the near future. I simply want a mass /home
>>> storage unit.
>>>
>>> -Grant
>>>
>>> - Original Message - From: "Christopher J. Umina"
>>> 
>>> To: "Grant Peel" 
>>> Cc: 
>>> Sent: Tuesday, July 21, 2009 5:43 PM
>>> Subject: Re: NFS- SAN - FreeBSD
>>>
>>>
>>>> Grant,
>>>>
>>>> I mean to say that often times external SCSI solutions (direct attached)
>>>> are cheaper and perform better (in terms of I/O) than iSCSI SANs. 
>>>> Especially
>>>> if you're using many disks.  SANs are generally chosen for the ability to 
>>>> be
>>>> split into LUNs for different servers.  Think of it as a disk which you can
>>>> partition and serve out to servers on a per-partition basis, over Ethernet.
>>>>  That's essentially what an iSCSI SAN does.  While DAS systems allow the
>>>> same sort of configuration, they don't serve out over Ethernet, only
>>>> SCSI/SAS.
>>>>
>>>> Since you plan to use NFS to share the files to the other servers, I
>>>> think it may make more sense for you to use a SCSI solution if yo don't 
>>>> need
>>>> the versatility of a SAN.
>>>>
>>>> Of course I know nothing of how you plan to expand this system, but from
>>>> what I understand, with Dell DAS hardware it is possible to connect up to 4
>>>> different servers to the DAS and expand to up to 6 15 disk enclosures. The
>>>> MD3000i (iSCSI) expands only to 3.
>>>>
>>>> Another issue is that without compiling in special versions of the iSCSI
>>>> initiator, even in 8.0-BETA2 (which is not pr

Re: NFS- SAN - FreeBSD

2009-07-21 Thread Grant Peel

Chris,

Again, thanks for the info.

I only have one server with a PERC (raid) card installed, and I beleive it 
is an older PERC 3 DCI, and doubt it would do the job. I would not be able 
to add more PERC cards to the other machines.


I am looking to have the connections all done via Ethernet. Again, the 
connections would be local (device to my switch, switch to the individual 
servers).


Does this mean I should be considering iSCSI, or, since the connections will 
all be on a local network, that I can continue to consider NFS?


Any takers?

-Grant

- Original Message - 
From: "Christopher J. Umina" 

To: "Grant Peel" 
Cc: 
Sent: Tuesday, July 21, 2009 8:01 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

DAS = Direct-Attached Storage, sorry to be confusing.

I cannot personally speak to the performance of FreeBSD's NFS, but I 
wouldn't expect it to be the bottleneck in the situation described.  Maybe 
others with more experience could chime in on this topic.


The way to use a DAS is to connect the DAS to a server with an external 
SAS cable (or two).  The PERC6/E controller you would need inside the 
server is very well supported in FreeBSD.  The DAS system would basically 
act the same as internal disks would act (in the case of the MD1000).  Of 
course you'll want to check with Dell before you make any purchases to be 
positive that your hardware will all communicate nicely, as I'm no Dell 
salesperson.


Depending on how large of an array you plan to make (if larger than 2TB) 
you may have to investigate gpart/gpt to partition correctly, but that's 
quite simple in my experience.


Chris

Grant Peel wrote:

Chris,

Thanks for the insight!

I will defineately investigate that DAS ... although I am not (yet) sure 
what the acronym means, I am sure it is something akin to "Direct Access 
SCSI".


You are quite right, I would like to use NFS to connect the device to the 
6 servers I have, again, it would be only hosting the /home partition for 
each of them. Do you know if there would be any NFS I/O slowdowns using 
it in that fassion? Would freebsd support (on the storage device) that 
many connections?


Also, do the Dell DAS machines run with FreeBSD?

Also, from you you explained, I doubt I really need the versatility of 
the SAN at this point, or in the near future. I simply want a mass /home 
storage unit.


-Grant

- Original Message - From: "Christopher J. Umina" 


To: "Grant Peel" 
Cc: 
Sent: Tuesday, July 21, 2009 5:43 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

I mean to say that often times external SCSI solutions (direct attached) 
are cheaper and perform better (in terms of I/O) than iSCSI SANs. 
Especially if you're using many disks.  SANs are generally chosen for 
the ability to be split into LUNs for different servers.  Think of it as 
a disk which you can partition and serve out to servers on a 
per-partition basis, over Ethernet.  That's essentially what an iSCSI 
SAN does.  While DAS systems allow the same sort of configuration, they 
don't serve out over Ethernet, only SCSI/SAS.


Since you plan to use NFS to share the files to the other servers, I 
think it may make more sense for you to use a SCSI solution if yo don't 
need the versatility of a SAN.


Of course I know nothing of how you plan to expand this system, but from 
what I understand, with Dell DAS hardware it is possible to connect up 
to 4 different servers to the DAS and expand to up to 6 15 disk 
enclosures. The MD3000i (iSCSI) expands only to 3.


Another issue is that without compiling in special versions of the iSCSI 
initiator, even in 8.0-BETA2 (which is not production-ready), iSCSI 
performance and reliability are terrible.  There are other versions of 
the code (which I currently use) for the iscsi_initiator kernel module, 
but unless you're comfortable doing that, you may consider DAS in terms 
of ease of implementation and maintenance as well.


Chris

Grant Peel wrote:

Chris,

I don't know what a direct attached array is.

What I was just thinking was move all of the servers /home directory to 
a huge NFS mount.


If you have the time to elaborate fursther, I would apprciate it...

This iSCSI think has me entrigued, but I must admit I know little about 
it at this point.


-Grant

- Original Message ----- From: "Christopher J. Umina" 


To: "Grant Peel" 
Sent: Monday, July 20, 2009 11:27 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

I have to ask, is there a reason you're intent on going with a SAN 
versus a direct-attached array?


Chris

Grant Peel wrote:

Thanks for the reply.

I have not used/investigated the iSCSI thing yet

The original question is can I just use an NFS mount to the storage's 
/home partition?


-Grant
  - Original Message -   From: mojo fms To: Grant Peel Cc: 
freebsd-questions@freebsd.org Sent: Monday, July 

Re: NFS- SAN - FreeBSD

2009-07-21 Thread Grant Peel

Chris,

Thanks for the insight!

I will defineately investigate that DAS ... although I am not (yet) sure 
what the acronym means, I am sure it is something akin to "Direct Access 
SCSI".


You are quite right, I would like to use NFS to connect the device to the 6 
servers I have, again, it would be only hosting the /home partition for each 
of them. Do you know if there would be any NFS I/O slowdowns using it in 
that fassion? Would freebsd support (on the storage device) that many 
connections?


Also, do the Dell DAS machines run with FreeBSD?

Also, from you you explained, I doubt I really need the versatility of the 
SAN at this point, or in the near future. I simply want a mass /home storage 
unit.


-Grant

- Original Message - 
From: "Christopher J. Umina" 

To: "Grant Peel" 
Cc: 
Sent: Tuesday, July 21, 2009 5:43 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

I mean to say that often times external SCSI solutions (direct attached) 
are cheaper and perform better (in terms of I/O) than iSCSI SANs. 
Especially if you're using many disks.  SANs are generally chosen for the 
ability to be split into LUNs for different servers.  Think of it as a 
disk which you can partition and serve out to servers on a per-partition 
basis, over Ethernet.  That's essentially what an iSCSI SAN does.  While 
DAS systems allow the same sort of configuration, they don't serve out 
over Ethernet, only SCSI/SAS.


Since you plan to use NFS to share the files to the other servers, I think 
it may make more sense for you to use a SCSI solution if yo don't need the 
versatility of a SAN.


Of course I know nothing of how you plan to expand this system, but from 
what I understand, with Dell DAS hardware it is possible to connect up to 
4 different servers to the DAS and expand to up to 6 15 disk enclosures. 
The MD3000i (iSCSI) expands only to 3.


Another issue is that without compiling in special versions of the iSCSI 
initiator, even in 8.0-BETA2 (which is not production-ready), iSCSI 
performance and reliability are terrible.  There are other versions of the 
code (which I currently use) for the iscsi_initiator kernel module, but 
unless you're comfortable doing that, you may consider DAS in terms of 
ease of implementation and maintenance as well.


Chris

Grant Peel wrote:

Chris,

I don't know what a direct attached array is.

What I was just thinking was move all of the servers /home directory to a 
huge NFS mount.


If you have the time to elaborate fursther, I would apprciate it...

This iSCSI think has me entrigued, but I must admit I know little about 
it at this point.


-Grant

- Original Message - From: "Christopher J. Umina" 


To: "Grant Peel" 
Sent: Monday, July 20, 2009 11:27 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

I have to ask, is there a reason you're intent on going with a SAN 
versus a direct-attached array?


Chris

Grant Peel wrote:

Thanks for the reply.

I have not used/investigated the iSCSI thing yet

The original question is can I just use an NFS mount to the storage's 
/home partition?


-Grant
  - Original Message -   From: mojo fms To: Grant Peel Cc: 
freebsd-questions@freebsd.org Sent: Monday, July 20, 2009 4:21 PM

  Subject: Re: NFS- SAN - FreeBSD


  You would be better off at least having the SAN on 1gb ethernet or 
even better tripple 1gb (on a 100mb switch should be fine but you need 
failover for higher avaliability) ethernet for latency and failover 
reasons with a hot backup on the network controller.  I dont see why 
you could not do this, its just iscsi connection normally so there is 
not a big issue getting freebsd to connect to it.  We run 2 of the 16tb 
powervault which does pretty well for storage, one runs everything and 
the other is a replicated offsite backup.  Performance wise, it really 
depends on how many servers you have pulling data from the SAN and how 
hard the IO works on the current servers.  If you have 100 servers you 
might push the IO a bit but but it should be fine if your not serving 
more than 2Mb/s out to everyone, the servers and disks are going to 
cache a fair amount of always used data.



  On Mon, Jul 20, 2009 at 11:52 AM, Grant Peel  
wrote:


Hi all,

I am assuming by the lack of response, my question to too long 
winded, let me re-phrase:


What kind of performance might I expect if I load FreeBSD 7.2 on a 
24 disk, Dell PowerVault when its only mission is to serve as a local 
area storage unit (/home). Obviously, to store all users /home data. 
Throug an NFS connection via fast (100m/b) ethernet. Each connecting 
server (6) contain about 200 domains?


-Grant

- Original Message - From: "Grant Peel" 


To: 
Sent: Saturday, July 18, 2009 10:35 AM
Subject: NFS- SAN - FreeBSD



  Hi all,

  Up to this point, all of our servers are standalone, i.e. all 
services 

Re: NFS- SAN - FreeBSD

2009-07-21 Thread Christopher J. Umina

Grant,

DAS = Direct-Attached Storage, sorry to be confusing.

I cannot personally speak to the performance of FreeBSD's NFS, but I 
wouldn't expect it to be the bottleneck in the situation described.  
Maybe others with more experience could chime in on this topic.


The way to use a DAS is to connect the DAS to a server with an external 
SAS cable (or two).  The PERC6/E controller you would need inside the 
server is very well supported in FreeBSD.  The DAS system would 
basically act the same as internal disks would act (in the case of the 
MD1000).  Of course you'll want to check with Dell before you make any 
purchases to be positive that your hardware will all communicate nicely, 
as I'm no Dell salesperson.


Depending on how large of an array you plan to make (if larger than 2TB) 
you may have to investigate gpart/gpt to partition correctly, but that's 
quite simple in my experience.


Chris

Grant Peel wrote:

Chris,

Thanks for the insight!

I will defineately investigate that DAS ... although I am not (yet) 
sure what the acronym means, I am sure it is something akin to "Direct 
Access SCSI".


You are quite right, I would like to use NFS to connect the device to 
the 6 servers I have, again, it would be only hosting the /home 
partition for each of them. Do you know if there would be any NFS I/O 
slowdowns using it in that fassion? Would freebsd support (on the 
storage device) that many connections?


Also, do the Dell DAS machines run with FreeBSD?

Also, from you you explained, I doubt I really need the versatility of 
the SAN at this point, or in the near future. I simply want a mass 
/home storage unit.


-Grant

- Original Message - From: "Christopher J. Umina" 


To: "Grant Peel" 
Cc: 
Sent: Tuesday, July 21, 2009 5:43 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

I mean to say that often times external SCSI solutions (direct 
attached) are cheaper and perform better (in terms of I/O) than iSCSI 
SANs. Especially if you're using many disks.  SANs are generally 
chosen for the ability to be split into LUNs for different servers.  
Think of it as a disk which you can partition and serve out to 
servers on a per-partition basis, over Ethernet.  That's essentially 
what an iSCSI SAN does.  While DAS systems allow the same sort of 
configuration, they don't serve out over Ethernet, only SCSI/SAS.


Since you plan to use NFS to share the files to the other servers, I 
think it may make more sense for you to use a SCSI solution if yo 
don't need the versatility of a SAN.


Of course I know nothing of how you plan to expand this system, but 
from what I understand, with Dell DAS hardware it is possible to 
connect up to 4 different servers to the DAS and expand to up to 6 15 
disk enclosures. The MD3000i (iSCSI) expands only to 3.


Another issue is that without compiling in special versions of the 
iSCSI initiator, even in 8.0-BETA2 (which is not production-ready), 
iSCSI performance and reliability are terrible.  There are other 
versions of the code (which I currently use) for the iscsi_initiator 
kernel module, but unless you're comfortable doing that, you may 
consider DAS in terms of ease of implementation and maintenance as well.


Chris

Grant Peel wrote:

Chris,

I don't know what a direct attached array is.

What I was just thinking was move all of the servers /home directory 
to a huge NFS mount.


If you have the time to elaborate fursther, I would apprciate it...

This iSCSI think has me entrigued, but I must admit I know little 
about it at this point.


-Grant

- Original Message - From: "Christopher J. Umina" 


To: "Grant Peel" 
Sent: Monday, July 20, 2009 11:27 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

I have to ask, is there a reason you're intent on going with a SAN 
versus a direct-attached array?


Chris

Grant Peel wrote:

Thanks for the reply.

I have not used/investigated the iSCSI thing yet

The original question is can I just use an NFS mount to the 
storage's /home partition?


-Grant
  - Original Message -   From: mojo fms To: Grant Peel Cc: 
freebsd-questions@freebsd.org Sent: Monday, July 20, 2009 4:21 PM

  Subject: Re: NFS- SAN - FreeBSD


  You would be better off at least having the SAN on 1gb ethernet 
or even better tripple 1gb (on a 100mb switch should be fine but 
you need failover for higher avaliability) ethernet for latency 
and failover reasons with a hot backup on the network controller.  
I dont see why you could not do this, its just iscsi connection 
normally so there is not a big issue getting freebsd to connect to 
it.  We run 2 of the 16tb powervault which does pretty well for 
storage, one runs everything and the other is a replicated offsite 
backup.  Performance wise, it really depends on how many servers 
you have pulling data from the SAN and how hard the IO works on 
the current servers.  

Re: NFS- SAN - FreeBSD

2009-07-21 Thread Christopher J. Umina

Grant,

I mean to say that often times external SCSI solutions (direct attached) 
are cheaper and perform better (in terms of I/O) than iSCSI SANs.  
Especially if you're using many disks.  SANs are generally chosen for 
the ability to be split into LUNs for different servers.  Think of it as 
a disk which you can partition and serve out to servers on a 
per-partition basis, over Ethernet.  That's essentially what an iSCSI 
SAN does.  While DAS systems allow the same sort of configuration, they 
don't serve out over Ethernet, only SCSI/SAS.


Since you plan to use NFS to share the files to the other servers, I 
think it may make more sense for you to use a SCSI solution if yo don't 
need the versatility of a SAN.


Of course I know nothing of how you plan to expand this system, but from 
what I understand, with Dell DAS hardware it is possible to connect up 
to 4 different servers to the DAS and expand to up to 6 15 disk 
enclosures.  The MD3000i (iSCSI) expands only to 3.


Another issue is that without compiling in special versions of the iSCSI 
initiator, even in 8.0-BETA2 (which is not production-ready), iSCSI 
performance and reliability are terrible.  There are other versions of 
the code (which I currently use) for the iscsi_initiator kernel module, 
but unless you're comfortable doing that, you may consider DAS in terms 
of ease of implementation and maintenance as well.


Chris

Grant Peel wrote:

Chris,

I don't know what a direct attached array is.

What I was just thinking was move all of the servers /home directory 
to a huge NFS mount.


If you have the time to elaborate fursther, I would apprciate it...

This iSCSI think has me entrigued, but I must admit I know little 
about it at this point.


-Grant

- Original Message - From: "Christopher J. Umina" 


To: "Grant Peel" 
Sent: Monday, July 20, 2009 11:27 PM
Subject: Re: NFS- SAN - FreeBSD



Grant,

I have to ask, is there a reason you're intent on going with a SAN 
versus a direct-attached array?


Chris

Grant Peel wrote:

Thanks for the reply.

I have not used/investigated the iSCSI thing yet

The original question is can I just use an NFS mount to the 
storage's /home partition?


-Grant
  - Original Message -   From: mojo fms To: Grant Peel Cc: 
freebsd-questions@freebsd.org Sent: Monday, July 20, 2009 4:21 PM

  Subject: Re: NFS- SAN - FreeBSD


  You would be better off at least having the SAN on 1gb ethernet or 
even better tripple 1gb (on a 100mb switch should be fine but you 
need failover for higher avaliability) ethernet for latency and 
failover reasons with a hot backup on the network controller.  I 
dont see why you could not do this, its just iscsi connection 
normally so there is not a big issue getting freebsd to connect to 
it.  We run 2 of the 16tb powervault which does pretty well for 
storage, one runs everything and the other is a replicated offsite 
backup.  Performance wise, it really depends on how many servers you 
have pulling data from the SAN and how hard the IO works on the 
current servers.  If you have 100 servers you might push the IO a 
bit but but it should be fine if your not serving more than 2Mb/s 
out to everyone, the servers and disks are going to cache a fair 
amount of always used data.



  On Mon, Jul 20, 2009 at 11:52 AM, Grant Peel  
wrote:


Hi all,

I am assuming by the lack of response, my question to too long 
winded, let me re-phrase:


What kind of performance might I expect if I load FreeBSD 7.2 on 
a 24 disk, Dell PowerVault when its only mission is to serve as a 
local area storage unit (/home). Obviously, to store all users /home 
data. Throug an NFS connection via fast (100m/b) ethernet. Each 
connecting server (6) contain about 200 domains?


-Grant

- Original Message - From: "Grant Peel" 


To: 
Sent: Saturday, July 18, 2009 10:35 AM
Subject: NFS- SAN - FreeBSD



  Hi all,

  Up to this point, all of our servers are standalone, i.e. all 
services and software required are installed on each local server.


  Apache, Exim, vm-pop3d, Mysql, etc etc.

  Each local server is connected to the Inet via a VLAN (WAN), 
to our colo's switch.


  Each server contains about 300 domains, each domain has its 
own IP.


  Each sever is also connected to a VLAN (LAN) via the same 
(Dell 48 Port managed switch).


  We have been considering consolidating all users data from 
each server to a central (local), storage unit.


  While I do have active nfs's running (for backups etc), on the 
LAN only, I have never attempted to create 1 mass storage unit.


  So I suppose the questions are:

  1) Is there any specific hardware that anyone might 
reccommend? I want to stick with FreeBSD as the OS as I am quite 
comfortable admining it,


  2) Would anyone reccomend NOT using FreeBSD? Why?

  3) Assuming I 

Re: NFS- SAN - FreeBSD

2009-07-20 Thread mojo fms
You would be better off at least having the SAN on 1gb ethernet or even
better tripple 1gb (on a 100mb switch should be fine but you need failover
for higher avaliability) ethernet for latency and failover reasons with a
hot backup on the network controller.  I dont see why you could not do this,
its just iscsi connection normally so there is not a big issue getting
freebsd to connect to it.  We run 2 of the 16tb powervault which does pretty
well for storage, one runs everything and the other is a replicated offsite
backup.  Performance wise, it really depends on how many servers you have
pulling data from the SAN and how hard the IO works on the current servers.
If you have 100 servers you might push the IO a bit but but it should be
fine if your not serving more than 2Mb/s out to everyone, the servers and
disks are going to cache a fair amount of always used data.

On Mon, Jul 20, 2009 at 11:52 AM, Grant Peel  wrote:

> Hi all,
>
> I am assuming by the lack of response, my question to too long winded, let
> me re-phrase:
>
> What kind of performance might I expect if I load FreeBSD 7.2 on a 24 disk,
> Dell PowerVault when its only mission is to serve as a local area storage
> unit (/home). Obviously, to store all users /home data. Throug an NFS
> connection via fast (100m/b) ethernet. Each connecting server (6) contain
> about 200 domains?
>
> -Grant
>
> - Original Message - From: "Grant Peel" 
> To: 
> Sent: Saturday, July 18, 2009 10:35 AM
> Subject: NFS- SAN - FreeBSD
>
>
>
> Hi all,
>>
>> Up to this point, all of our servers are standalone, i.e. all services and
>> software required are installed on each local server.
>>
>> Apache, Exim, vm-pop3d, Mysql, etc etc.
>>
>> Each local server is connected to the Inet via a VLAN (WAN), to our colo's
>> switch.
>>
>> Each server contains about 300 domains, each domain has its own IP.
>>
>> Each sever is also connected to a VLAN (LAN) via the same (Dell 48 Port
>> managed switch).
>>
>> We have been considering consolidating all users data from each server to
>> a central (local), storage unit.
>>
>> While I do have active nfs's running (for backups etc), on the LAN only, I
>> have never attempted to create 1 mass storage unit.
>>
>> So I suppose the questions are:
>>
>> 1) Is there any specific hardware that anyone might reccommend? I want to
>> stick with FreeBSD as the OS as I am quite comfortable admining it,
>>
>> 2) Would anyone reccomend NOT using FreeBSD? Why?
>>
>> 3) Assuming I am using FreeBSD as the storage systems OS, could NFS simply
>> be used?
>>
>> 4) Considering out whole Inet traffic runs about 2 Mb/s, is there any
>> reason the port to the Storage unit should be more than 100 M/b (would it be
>> imparative to use 1 G/b transfer)?
>>
>> TIA,
>>
>> -Grant
>>
>> ___
>> freebsd-questions@freebsd.org mailing list
>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
>> To unsubscribe, send any mail to "
>> freebsd-questions-unsubscr...@freebsd.org"
>>
>>
>>
>
> ___
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> http://lists.freebsd.org/mailman/listinfo/freebsd-questions
> To unsubscribe, send any mail to "
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>



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Re: NFS- SAN - FreeBSD

2009-07-20 Thread Grant Peel
Thanks for the reply.

I have not used/investigated the iSCSI thing yet

The original question is can I just use an NFS mount to the storage's /home 
partition?

-Grant
  - Original Message - 
  From: mojo fms 
  To: Grant Peel 
  Cc: freebsd-questions@freebsd.org 
  Sent: Monday, July 20, 2009 4:21 PM
  Subject: Re: NFS- SAN - FreeBSD


  You would be better off at least having the SAN on 1gb ethernet or even 
better tripple 1gb (on a 100mb switch should be fine but you need failover for 
higher avaliability) ethernet for latency and failover reasons with a hot 
backup on the network controller.  I dont see why you could not do this, its 
just iscsi connection normally so there is not a big issue getting freebsd to 
connect to it.  We run 2 of the 16tb powervault which does pretty well for 
storage, one runs everything and the other is a replicated offsite backup.  
Performance wise, it really depends on how many servers you have pulling data 
from the SAN and how hard the IO works on the current servers.  If you have 100 
servers you might push the IO a bit but but it should be fine if your not 
serving more than 2Mb/s out to everyone, the servers and disks are going to 
cache a fair amount of always used data.


  On Mon, Jul 20, 2009 at 11:52 AM, Grant Peel  wrote:

Hi all,

I am assuming by the lack of response, my question to too long winded, let 
me re-phrase:

What kind of performance might I expect if I load FreeBSD 7.2 on a 24 disk, 
Dell PowerVault when its only mission is to serve as a local area storage unit 
(/home). Obviously, to store all users /home data. Throug an NFS connection via 
fast (100m/b) ethernet. Each connecting server (6) contain about 200 domains?

-Grant

- Original Message - From: "Grant Peel" 
To: 
Sent: Saturday, July 18, 2009 10:35 AM
Subject: NFS- SAN - FreeBSD 




  Hi all,

  Up to this point, all of our servers are standalone, i.e. all services 
and software required are installed on each local server.

  Apache, Exim, vm-pop3d, Mysql, etc etc.

  Each local server is connected to the Inet via a VLAN (WAN), to our 
colo's switch.

  Each server contains about 300 domains, each domain has its own IP.

  Each sever is also connected to a VLAN (LAN) via the same (Dell 48 Port 
managed switch).

  We have been considering consolidating all users data from each server to 
a central (local), storage unit.

  While I do have active nfs's running (for backups etc), on the LAN only, 
I have never attempted to create 1 mass storage unit.

  So I suppose the questions are:

  1) Is there any specific hardware that anyone might reccommend? I want to 
stick with FreeBSD as the OS as I am quite comfortable admining it,

  2) Would anyone reccomend NOT using FreeBSD? Why?

  3) Assuming I am using FreeBSD as the storage systems OS, could NFS 
simply be used?

  4) Considering out whole Inet traffic runs about 2 Mb/s, is there any 
reason the port to the Storage unit should be more than 100 M/b (would it be 
imparative to use 1 G/b transfer)?

  TIA,

  -Grant

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Re: NFS- SAN - FreeBSD

2009-07-20 Thread Grant Peel

Hi all,

I am assuming by the lack of response, my question to too long winded, let 
me re-phrase:


What kind of performance might I expect if I load FreeBSD 7.2 on a 24 disk, 
Dell PowerVault when its only mission is to serve as a local area storage 
unit (/home). Obviously, to store all users /home data. Throug an NFS 
connection via fast (100m/b) ethernet. Each connecting server (6) contain 
about 200 domains?


-Grant

- Original Message - 
From: "Grant Peel" 

To: 
Sent: Saturday, July 18, 2009 10:35 AM
Subject: NFS- SAN - FreeBSD



Hi all,

Up to this point, all of our servers are standalone, i.e. all services and 
software required are installed on each local server.


Apache, Exim, vm-pop3d, Mysql, etc etc.

Each local server is connected to the Inet via a VLAN (WAN), to our colo's 
switch.


Each server contains about 300 domains, each domain has its own IP.

Each sever is also connected to a VLAN (LAN) via the same (Dell 48 Port 
managed switch).


We have been considering consolidating all users data from each server to 
a central (local), storage unit.


While I do have active nfs's running (for backups etc), on the LAN only, I 
have never attempted to create 1 mass storage unit.


So I suppose the questions are:

1) Is there any specific hardware that anyone might reccommend? I want to 
stick with FreeBSD as the OS as I am quite comfortable admining it,


2) Would anyone reccomend NOT using FreeBSD? Why?

3) Assuming I am using FreeBSD as the storage systems OS, could NFS simply 
be used?


4) Considering out whole Inet traffic runs about 2 Mb/s, is there any 
reason the port to the Storage unit should be more than 100 M/b (would it 
be imparative to use 1 G/b transfer)?


TIA,

-Grant

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