Good point, Mike.
It also makes a good case for user volume sets. I know there are systems out there with 20 or 30 MPEXL drives which makes a failed drive a fun way to spend the week.
Raid storage (NIKE/12H scsi) has gotten pretty cheap and reduces the risk significantly. Even if you lose a controller, it's most often a recoverable situation without data loss.
I've never tried it, but I understand the UX DD command will create a sector for sector copy of a drive.
Anyone else used this to mirror an MPE disc?
Jack
-----Original Message-----
From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf Of Michael Anderson
Sent: Wednesday, February 23, 2011 12:33 PM
To: [log in to unmask]
Subject: [HP3000-L] The reliability of Tapes, was (Replacement of SE Scsi to DF Scsi Storage)
Very well said Donna.
Tapes also have their limitations, but what are our options? On a few
occasions, attempting to load from tape, I've found the tape to be
unreadable, and on other occasions I've had the tape chewed-up by the
tape drive. For this reason I always keep multiple copies of CSLT's.
Not being able to do this for SLT, FOS, and SUBSYS tapes, adds another
item to my MPE wish-list. Today with all the various binary formats and
disc imaging techniques, there should be a way to store these tape
images to disc, rendering the ability to make a new tape when needed. I
believe someone on the list had written some software to do this, don't
recall who? As time moves on, and our systems get older, this could be a
necessary solution for Homesteader's.
Mike.
donna hofmeister wrote:
> cf0a = enter genesis = 1) cslt is bad and/or 2) tape drive is bad
>
> if the drive that you pulled is NOT ldev 1, you might be able to bring the system up single-user, single-disk and make a
> new cslt...but if you tape drive is bad...well... if the bad drive is ldev 1, see my next sentence...
>
> get a call into your hw support people immediately and hopefully they can help you rescue this system.
>
> folks -- you really do need to be making and verifying cslt's on a regular basis! with as old as our boxes (discs in
> particular) are, these tapes are the only thing standing between you and a disaster.
>
> - d
>
> ---
> Donna Hofmeister
> Allegro Consultants, Inc.
> 408-252-2330
>
>
>
>> -----Original Message-----
>> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On Behalf Of Mark Landin
>> Sent: Wednesday, February 23, 2011 8:07 AM
>> To: [log in to unmask]
>> Subject: Re: [HP3000-L] Replacement of SE Scsi to DF Scsi Storage.
>>
>> What LDEV was the disk configured as?
>>
>> On 2/23/11, Harpreet SINGH <[log in to unmask]> wrote:
>>
>>> Dear All,
>>>
>>> Many Thanks for the prompt replies and valuable suggestions. After
>>> checking with the internal team and confirmed as of now we don't need more
>>> space.
>>>
>>> So what I have did, I have removed the faulty disk from the storage , and
>>> boot the server from old generated CSLT Tape.
>>>
>>> I am able to boot the server from tape.
>>>
>>> ISL > INSTALL
>>>
>>> Initialize memory manager complete
>>> Beginning INSTALL...............
>>>
>>> (and it is keep hang on the same screen am not what is going on.)
>>>
>>> I have checked on the console status code shows CF0A
>>>
>>> With Warm Regards
>>> =-=-=-=-=-=-=-=-=-=-=-=-=-
>>> Harpreet Singh Chana
>>>
>>> Phone : (O) 6895 - 4326
>>> Fax : (O) 6895 - 4991
>>> =-=-=-=-=-=-=-=-=-=-=-=-=-
>>> Please do not print this email unless it is absolutely necessary.
>>>
>>>
>>> Notice
>>> The information in this message is confidential and may be legally
>>> privileged. It is intended solely for the addressee. Access to this
>>> message by anyone else is unauthorized. If you are not the intended
>>> recipient, any disclosure, copying or distribution of the message, or
>>> any action taken by you in reliance on it, is prohibited and may be
>>> unlawful. If you have received this message in error, please delete it
>>> and contact the sender immediately. Thank you.
>>>
>>>
>>>
>>>
>>>
>>> John Lee
>>> <[log in to unmask]
>>> ET> To
>>> Sent by: HP-3000 [log in to unmask]
>>> Systems cc
>>> Discussion
>>> <[log in to unmask] Subject
>>> TC.EDU> Re: [HP3000-L] Replacement of SE
>>> Scsi to DF Scsi Storage.
>>>
>>> 02/23/2011 10:46
>>> PM
>>>
>>>
>>>
>>> Please respond to
>>> John Lee
>>> <[log in to unmask]
>>> ET>
>>>
>>>
>>>
>>>
>>>
>>>
>>> Your 928 is likely very limited in I/O slots. The 28696A FWD
>>> interface card uses a full height slot, which you may not have
>>> available. If not, I question how much of a performance increase
>>> you're going to see anyway. Sometimes using 2 SE slots to 2 backup
>>> units works instead. Or HP did make a SE DLT drive for that unit...FWIW.
>>>
>>> John Lee
>>> Still crazy after all these years
>>>
>>>
>>>
>>> At 06:19 PM 02/22/2011, Jack Connor wrote:
>>>
>>>> HP part for the FWD card is 28696A.
>>>>
>>>> Depending on what storage you're going to use, you may want to make
>>>> sure the f/w on the card is 3728 or later.
>>>>
>>>> jack
>>>>
>>>> -----Original Message-----
>>>> From: HP-3000 Systems Discussion [mailto:[log in to unmask]] On
>>>> Behalf Of Al nizzardini
>>>> Sent: Tuesday, February 22, 2011 7:00 PM
>>>> To: [log in to unmask]
>>>> Subject: Re: [HP3000-L] Replacement of SE Scsi to DF Scsi Storage.
>>>>
>>>> Create new SLT then reload time. Also change the primary boot path.
>>>>
>>>> TIA,
>>>>
>>>> Al Nizzardini
>>>>
>>>> IT Technical Consultant
>>>> for today, for tomorrow and beyond
>>>> 443-465-6205
>>>>
>>>>
>>>>
>>>>
>>>> ----- Original Message ----
>>>> From: "Johnson, Tracy" <[log in to unmask]>
>>>> To: [log in to unmask]
>>>> Sent: Tue, February 22, 2011 6:51:18 PM
>>>> Subject: Re: [HP3000-L] Replacement of SE Scsi to DF Scsi Storage.
>>>>
>>>> Off the top of my head I can think of a few things:
>>>>
>>>> 1) You'll need to add a DF card, if I guess correctly your 928 doesn't
>>>> have one?
>>>>
>>>> 2) Shut down and power down.
>>>>
>>>> 3) Add a new DF card (a.k.a FW?) and new storage unit.
>>>>
>>>> 4) Power up. Boot to ISL.
>>>>
>>>> 5) Enter ODE, run MAPPER (or MAPPER2?).
>>>>
>>>> 6) Read the path and model of the DF(FW?) card. Path and model of the
>>>> new storage unit if also attached.
>>>>
>>>> 7) Add the path of the new card in SYSGEN.
>>>>
>>>> 8) Add the PSEUDO path in SYSGEN.
>>>>
>>>> 9) Add the new LDEV desired of the new unit in SYSGEN.
>>>>
>>>> 10) Reboot.
>>>>
>>>> If anyone thinks I missed something, correct me.
>>>>
>>>> Tracy Johnson
>>>> Office 1-757-766-4318
>>>> [log in to unmask]
>>>>
>>>>
>>>>
>>>>> -----Original Message-----
>>>>> From: HP-3000 Systems Discussion
>>>>> [mailto:[log in to unmask]] On Behalf Of Harpreet SINGH
>>>>> Sent: Tuesday, February 22, 2011 6:17 PM
>>>>> To: [log in to unmask]
>>>>> Subject: [HP3000-L] Replacement of SE Scsi to DF Scsi Storage.
>>>>>
>>>>> Dear All,
>>>>>
>>>>> I have a 928 server. Which is configured with SE Scsi
>>>>> Storage Unit. All
>>>>> Full backups and CSLT Tapes are generated on SE Scsi Storage.
>>>>>
>>>>> I would like to replace the SE Scsi Storage to DF Scsi.
>>>>>
>>>>> Please advise what are the instructions I have to follow. I
>>>>> have rebuild
>>>>> the system couple of time on the same storage but never
>>>>> changed the Storage
>>>>> Unit.
>>>>>
>>>>> With Warm Regards
>>>>> =-=-=-=-=-=-=-=-=-=-=-=-=-
>>>>> Harpreet Singh Chana
>>>>>
>>>>> Phone : (O) 6895 - 4326
>>>>> Fax : (O) 6895 - 4991
>>>>> =-=-=-=-=-=-=-=-=-=-=-=-=-
>>>>>
>>>>>
>>>> * To join/leave the list, search archives, change list settings, *
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>>>>
>>>>
>>>>
>>>>
>>>>
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>>>>
>>>> Be sure to ask us about short term and long term rentals on servers,
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>>>>
>>>> CONFIDENTIALITY NOTICE: This communication with its contents may
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>>> * To join/leave the list, search archives, change list settings, *
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>>> ForwardSourceID:NT0019F80E
>>>
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>>>
>> --
>> Sent from my mobile device
>>
>> "He's old enough to know what's right and young enough not to choose
>> it. He's strong enough to win the world and weak enough to lose it." -
>> Neal Peart
>>
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>
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