Shared storage option.  We have several media servers, but we just zone
all drives to all media servers (except for SAN media servers that back
only themselves up) so it becomes a whatever is available type of
situation.  We  have several hundred to a few thousand clients so we
want to make sure something is always available, so we limit the amount
of drives that can be going at one time on a give media server...

-----Original Message-----
From: Justin Piszcz [mailto:jpiszcz at lucidpixels.com] 
Sent: Tuesday, August 22, 2006 9:25 AM
To: Lewick, Taylor
Cc: Paul Keating; veritas-bu at mailman.eng.auburn.edu
Subject: RE: [Veritas-bu] Help, media issues

Also, separate question, why would you ever put 30 drives on a server?
I 
guess if a lot of them are slow that might work, but most servers cannot

handle more than 2-4 LTO2 drives and definitely not more than 4 LTO3 
drives unless you have at least a DL585 + 10GBIT, even then with 4
drives 
you'll nearly max out the 10GBps card if you could push that much.

On Tue, 22 Aug 2006, Lewick, Taylor wrote:

> LTO2s are shared storage, configured as HCART2
> LTO1s are shared storage, configured as HCART1
>
> I have looked at drives over and over again, everything looks okay to
> me...
>
> Here is some tpconfig -d on one host that can see DLT, LTO2 and LTO3
> (haven't set LTO1 on this host yet...) DLT and LTO3 work great, they
are
> in separate library. TLD(1) robot/library is DLT and LTO3, TLD(2) is
> LTO1 and LTO2...
>
> 18   tld1-lto3-9            /dev/rmt/c76t3d0BESTnb   hcart3   Yes
> UP
>        TLD(1) Definition       DRIVE=9
> 19   tld1-lto3-10           /dev/rmt/c75t3d0BESTnb   hcart3   Yes
> UP
>        TLD(1) Definition       DRIVE=10
> 20   tld2-lto2-3            /dev/rmt/c81t3d0BESTnb   hcart2   Yes
> DOWN
>        TLD(2) Definition       DRIVE=3
> 21   tld2-lto2-4            /dev/rmt/c88t3d0BESTnb   hcart2   Yes
> DOWN
>        TLD(2) Definition       DRIVE=4
> 22   tld2-lto2-5            /dev/rmt/c91t3d0BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=5
> 23   tld2-lto2-6            /dev/rmt/c82t3d0BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=6
> 24   tld2-lto2-7            /dev/rmt/c83t3d0BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=7
> 25   tld2-lto2-8            /dev/rmt/c85t3d0BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=8
> 26   tld2-lto2-9            /dev/rmt/c90t3d0BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=9
> 27   tld2-lto2-10           /dev/rmt/c87t3d0BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=10
> 28   tld2-lto2-11           /dev/rmt/c89t3d0BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=11
> 29   tld2-lto2-12           /dev/rmt/c93t3d1BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=12
> 30   tld2-lto2-13           /dev/rmt/c95t3d1BESTnb   hcart2   Yes
> UP
>        TLD(2) Definition       DRIVE=13
>
>
>
>
> -----Original Message-----
> From: Justin Piszcz [mailto:jpiszcz at lucidpixels.com]
> Sent: Tuesday, August 22, 2006 9:13 AM
> To: Lewick, Taylor
> Cc: Paul Keating; veritas-bu at mailman.eng.auburn.edu
> Subject: Re: [Veritas-bu] Help, media issues
>
> Yeah that is exactly what I was going to ask, how are the drives
> configured?
>
> Justin.
>
> On Tue, 22 Aug 2006, Lewick, Taylor wrote:
>
>> Configured the same, different then the other type of LTO media and
>> drives in the library...
>>
>> -----Original Message-----
>> From: Paul Keating [mailto:pkeating at bank-banque-canada.ca]
>> Sent: Tuesday, August 22, 2006 9:01 AM
>> To: Lewick, Taylor; veritas-bu at mailman.eng.auburn.edu
>> Subject: RE: [Veritas-bu] Help, media issues
>>
>> Are then LTO2 tapes and drives configured as the same "type", ie.
>> HCART2, and different than the type of the LTO cartridges and drives?
>>
>> Paul
>>
>> --
>>
>>
>>> -----Original Message-----
>>> From: veritas-bu-bounces at mailman.eng.auburn.edu
>>> [mailto:veritas-bu-bounces at mailman.eng.auburn.edu] On Behalf
>>> Of Lewick, Taylor
>>> Sent: August 22, 2006 9:39 AM
>>> To: veritas-bu at mailman.eng.auburn.edu
>>> Subject: [Veritas-bu] Help, media issues
>>>
>>>
>>> Hi all, having an issue that is stumping me...
>>>
>>> This past weekend we moved one of our tape libraries.
>>> It has LTO1 and LTO2 drives and media in it.
>>>
>>> I can see all the drives okay, and LTO1 backups are working fine.
>>> When I kick off an LTO2 backup job, it immediately freezes any tape
> it
>>> tries to load.  If I let it keep running, it just keeps freezing
more
>>> and more tapes.
>>>
>>> The only thing it says is...FREEZING media ID LL1535, it is
>>> unmountable
>>> and cannot be used for backups.
>>>
>>> Media is in correct volume pool, volume group, barcode rules are
>>> correct, and I even checked that it was loaded into the library
>>> correctly, i.e. not loaded backwards and write protect tab is not
> set.
>>> Furthermore, we haven't made any changes to the above listed
>>> attributes.
>>> I have tried stopping and starting NetBackup several times, no help.
>>>
>>> Any ideas?
>>>
>>> Thanks,
>>> Taylor
>>>
>>> _______________________________________________
>>> Veritas-bu maillist  -  Veritas-bu at mailman.eng.auburn.edu
>>> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>>>
>>
>> _______________________________________________
>> Veritas-bu maillist  -  Veritas-bu at mailman.eng.auburn.edu
>> http://mailman.eng.auburn.edu/mailman/listinfo/veritas-bu
>>
>