- Community Home
- >
- Servers and Operating Systems
- >
- Operating Systems
- >
- Operating System - OpenVMS
- >
- Re: Save set file size
Categories
Company
Local Language
Forums
Discussions
Forums
- Data Protection and Retention
- Entry Storage Systems
- Legacy
- Midrange and Enterprise Storage
- Storage Networking
- HPE Nimble Storage
Discussions
Discussions
Discussions
Forums
Forums
Discussions
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
- BladeSystem Infrastructure and Application Solutions
- Appliance Servers
- Alpha Servers
- BackOffice Products
- Internet Products
- HPE 9000 and HPE e3000 Servers
- Networking
- Netservers
- Secure OS Software for Linux
- Server Management (Insight Manager 7)
- Windows Server 2003
- Operating System - Tru64 Unix
- ProLiant Deployment and Provisioning
- Linux-Based Community / Regional
- Microsoft System Center Integration
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Discussion Boards
Community
Resources
Forums
Blogs
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 07:47 AM
тАО04-06-2005 07:47 AM
I use the following command to create a save set file
$ BACKUP/IGNORE=(INTERLOCK)/LABEL=(RSBKUP) DKC0:[000000...]*.*;* MKE500:RS_DAT.SAV/SAVE_SET/NOREWIND/log/block=65024
Then I use the following command to check the save set file size
$mount/ov=id mke500:
$dir mke500:[000000...]*.*/size
it display the RS_DAT.SAV save set file size is 16547 blocks
So the save set file size would be
16547/(2*1024)= 8.07 M
Is that right? For save set file, are they use the same way to calculate the size as the disk file?
thanks
Lionel
Solved! Go to Solution.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 07:54 AM
тАО04-06-2005 07:54 AM
Re: Save set file size
(16547*65024)/(1024*1024*1024) = 1Gb
Purely Personal Opinion
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 08:00 AM
тАО04-06-2005 08:00 AM
Re: Save set file size
You should expect your save set to be quite a bit larger than the total size of the files you saved into it, because BACKUP adds error detection and correction codes. 10%-20% larger is probably reasonable.
--Travis Craig
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 08:06 AM
тАО04-06-2005 08:06 AM
Re: Save set file size
If I am using the following command without /block=65024
$ BACKUP/IGNORE=(INTERLOCK)/LABEL=(RSBKUP) DKC0:[000000...]*.*;* MKE500:RS_DAT.SAV/SAVE_SET/NOREWIND/log
So the system will use 32256 as default block size
the save set file size would be
16547*32256/(1024*1024)= 509 M
Is that right? 32256 is the system default block size for save set file,correct?
Thanks again
Lionel
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 08:32 AM
тАО04-06-2005 08:32 AM
Re: Save set file size
For tape the default block size is 8192 bytes. 32256 is the default block size (record size) for disks. See HELP BACKUP /BLOCK_SIZE.
Bojan
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 08:56 AM
тАО04-06-2005 08:56 AM
Re: Save set file size
Can somebody give me a example how to calculate the disk and save set file size
?
what is the system default block size for disk file and what is the system default block size for save set?
Thanks again
Lionel
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 07:52 PM
тАО04-06-2005 07:52 PM
SolutionFor tape files it is in principle the same, just the block-size does vary: file size is nblocks*blocksize bytes.
The block-size of tape files (like savesets), if not known, You can get using DIRECTORY/FULL:
$ mount tape: !NOT mount/foreign
$ directory/full tape:
You get the file-size in blocks , and the record length = blocksize for fixed length records (backup savesets are fixed length records).
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-06-2005 07:58 PM
тАО04-06-2005 07:58 PM
Re: Save set file size
Most drives support compression up to 80%, so if the tape was initialised with /MEDIA=COMPACT, this will have a big effect.
Robert.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-07-2005 01:34 AM
тАО04-07-2005 01:34 AM
Re: Save set file size
For the sake of completeness, why is a directory/full necessary for a save-set on tape, isn't a directory/size enough ?
Directory/size gives the size as number of blocks, but the blocksize is not known.
One can write many savesets to tape, each with different blocksize. So one needs the 'record size' from directory/full to calculate the save-set-size.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Permalink
- Report Inappropriate Content
тАО04-07-2005 02:50 AM
тАО04-07-2005 02:50 AM
Re: Save set file size
You can obtain blocksize using:
Backup/list MKE500:RS_DAT.SAV/SAVE
and see this information on head information of save set file.
Saludos.
Daniel