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тАО06-27-2007 07:22 AM
тАО06-27-2007 07:22 AM
Re: Disk compatibility with VMS
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тАО06-27-2007 07:59 AM
тАО06-27-2007 07:59 AM
Re: Disk compatibility with VMS
"Disk $1$DGA1550: (NRCAVA), device type HP OPEN-V,... Total blocks 113890560"
The storage folks can probably confirm the WWID values.
There was a problem with the INIT /LIMIT.
Either the OpenVMS version you are using is way old, or someone redefined INIT.
- Which OpenVMS version?
- SHOW SYMB INIT
Anyway... You could move forward and try the straight init.
Personally I would recommend you first do: $MOUNT/OVER=ID $1$DGA1550:
And make sure this is not storage in use before the init.
You are close to bringing the new storage to live.
However, in view of the questions asked and information provide I would urge you to consult with a peer or product support before really moving forward. This to make sure an optimal configuration is made and no damage will be done.
Also... if more info is needed the PLEASE attache it as SIMPLE TEXT file and clean out typo's, leaving just real commands, results and erors.
Cheers,
Hein van den Heuvel
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тАО06-28-2007 02:57 AM
тАО06-28-2007 02:57 AM
Re: Disk compatibility with VMS
$ SHOW SYS/NOPROCESS
Go ahead and initialize the disk and mount it system-wide. Then you are ready to use it. If you know more about what you'll be putting on that disk in the future (no. of files etc.), you may want use use some more specific qualifiers on the INIT command.
Volker.
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тАО06-28-2007 06:30 AM
тАО06-28-2007 06:30 AM
Re: Disk compatibility with VMS
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тАО06-28-2007 06:31 AM
тАО06-28-2007 06:31 AM
Re: Disk compatibility with VMS
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тАО06-28-2007 07:06 AM
тАО06-28-2007 07:06 AM
Re: Disk compatibility with VMS
While the minimum clustersize will be 109, I would recommend /CLUST=128 or 112 (128 - 16)
If you expect many (100,000+) little file then this many be too much waste (10% of the disk). For fewer ( less that 10,000 ) larger files it matters little (less than 1% waste in rounding).
If that cluster size is high (more than those 100,000 files expected) then you may want to go back to the storage folks and request 2 times 25GB instead of 1 times 50.
Better still... get an upgrade to OpenVMS going. At least 7.3-2 but why not 8.3?
I would highly recommend you anticipate the number of files expected + 10% and and indicated that value to /HEADER
Might as well make sure the default MAXFILES is appropiate while there (about 1/2 million).
I would also chose /INDEX=BEGIN but that's more taste / guttfeel than well founded advise.
Enjoy,
Hein.
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тАО06-30-2007 04:27 AM
тАО06-30-2007 04:27 AM
Re: Disk compatibility with VMS
>>>
With 7.2 you are limited to about 1 million clusters = allocations units: (256 blocks of bitmap.sys). And thus also a max of 1 million files.
<<<
Hein, are you sure of that? As far as my (regrettable quite fallible) bio-memory remembers, the limits you mention were lifted at the intro of 7.2
VERY nice features as Dynamic Volume Expansion and Dissimilar Device Shadowing were introduced during 7.3-2, perhaps uou are confusing those?
But, owilliams, also since 7.2-2 (which introduced SAN support) MANY and important advances in SAN use were introduced. If you are to profit from SAN, you REALLY should move to at least 7.3-2 with the later UPDATES; or better to 8.3.
fwiw,
Proost.
Have one on me.
jpe
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тАО06-30-2007 05:35 AM
тАО06-30-2007 05:35 AM
Re: Disk compatibility with VMS
http://h71000.www7.hp.com/doc/73final/6017/6017pro_030.html
See "Limits of Storage and Index File Bitmaps"
pre-V7.2:
255 blocks * 512 byte/block * 8 bits / byte = 1,044,480 bits or clusters
V7.2 and up:
65,535 blocks * 512 byte/block * 8 bits / byte = 268,431,360 bits
Today, you can even initialize a disk with about 137 harware GigaBytes using a cluster factor of 1.
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тАО07-03-2007 04:18 AM
тАО07-03-2007 04:18 AM
Re: Disk compatibility with VMS
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тАО07-03-2007 04:22 AM
тАО07-03-2007 04:22 AM
Re: Disk compatibility with VMS
Volker.