Hp Data protector cleaning tape usage

Cleaning Tape Usage
The cleaning status is NOT checked while a medium is in the drive and being written to. The status of the cleaning request is checked only when a medium is being loaded or changed. So, if the drive sets the cleaning bit, part way through a backup session, the medium is not immediately unloaded. It will be used until it is full, assuming that there is enough data to fill it, in the current backup session.
When medium #1 is unloaded, the cleaning request will be checked; the cleaning tape will be loaded and used. After that, medium #2 will be loaded to continue the backup. It is possible that medium #1 is in bad shape and could be the cause of the cleaning request. However,
Data Protector assumes the medium is still 'Good' and does not mark medium #1 as 'Poor'. The medium will be used again, when it is the 'least recently used'.
If medium #1 is really faulty, this will show up next time it is used, when the write operations fail. Then it will be marked 'Poor' and not used again.
DDS cleaning tapes are a fixed length, with just enough for '25 times 30 seconds' of cleaning. When 30 seconds of cleaning has completed successfully, the clean bit on the drive is reset. The cleaning tape moves forward, over one section of tape, for each 30 seconds of cleaning and it NEVER rewinds! It just moves along until it gets to the end and then it stops.
Once it is at the end, it is an 'expired' cleaning tape. If you load an 'expired' cleaning tape, the tape is active for less than 20 seconds, it does not actually do any cleaning and the cleaning bit is NOT reset. Data Protector can initiate a cleaning operation when the drive sets the cleaning bit. After the cleaning is done, Data Protector will recheck the cleaning bit. If it is still set, Data Protector will terminate the session and will report that the cleaning tape was requested twice for the device.

Data Protector Post Exec Exit errors

Data Protector Post Exec exits with error code - these are they key to solve the problem
These are prost exec script exit code errors and meanings
0 Normal, successful termination
1 Program failed, user error
2 Program failed, environmental malfunction
3 Program failed, internal malfunction
4 Program failed, reason unknown

Data Protector MOM time syn issue

Hi,

schedule is always relative to the time on the Cell Manager. so while monitoring Backup from it should remberer

if any body found this comment are welcome.

Can't Backspace block error

Error: Can't backspace block (Details unknown) a backup failed with this error and tapes are maked poor.

Solution 1: This problem mostly occurs due to SCSI connection, Please disconnect and reconnect SCSI Cable to Tape library. hope problem resolved.

hp data protector Cannot hp data protector Cannot perform stat(): ([5] Access is denied. ) => not restored.. perform stat(): ([5] Access is denied. )

Error:- hp data protector Cannot hp data protector Cannot perform stat(): ([5] Access is denied. ) => not restored.. perform stat(): ([5] Access is denied. ) => not restored..

Solution :- This happens when you try to restore with restore As or trying to restore where DP services does not have access on the disk .

Wel Come Back To My Blog

Hi,

I came back with new things, which are really help full in day to day job.


Regards
Praveen

Wel Come Back To My Blog

Hi,

I came back with new things, which are really help full in day to day job.


Regards
Praveen

omnirpt A beatifull command for HP DP backup administrators

As backup administrator we need to configure the reporting, even if you are working you need a centralised monitoring system at that time we have to write scripts for several usages like reporting , media management, notifications etc,,,,,,,,,

I feel this beatiful reporting command every HP DP backup administrator must know, i am going to post some of the best usages with omnirpt .

How to skip mount request if the required tape not availabe

Some time if you face mount request in HP DP even you rescan the tape library some time it may not pick the free tape in that case what ever backup is running see that for mat the free or expired tape in that pool just confirm the request it will works.

More about Mount Request

Genarally A mount request come due to

1. Pre allocated /auto allocated media is not available
2. there is no media

A good Help provided in HP DP below chat explains how DP selects (Free Pool Concept)

Media selection factors

Allocation Policy	Allocate Unformatted Media First	Data Protector Selection Order
Loose	OFF	Preallocation list (if specified) Appendable (as set in usage policy) Unprotected Data Protector Media Unformatted Media Fair Media
Loose	ON	Preallocation list (if specified) Appendable (as set in usage policy) Unformatted Media Unprotected Data Protector Media Fair Media
Strict	Not applicable	Preallocation list (if specified) Appendable (as set in usage policy) Unprotected Data Protector Media Fair Media