Re: Additional DASD devices
IBM Mainframe Discussion List wrote on 06/07/2005 09:11:25 AM: > > > > UCBs use E/SQA. They will reside above or below the line according to > > the device definition in HCD. > > > > Peter Hunkeler > > Senior IT Specialist, IBM zSeries Technical Sales Support, Switzerland > E/SQA? I thought they were nucleus resident? Well, "back in the day" at > least. I wonder because I did not increase the SQA= parameter in > IEASYSnn when I added all the Shark devices. Or is SQA automagically > increased? UCBs were nucleus resident back when they were defined by IOGEN and later MVSCP. When defined in an IODF, they are in SQA/ESQA. Based on the contents of the IODF, IPL processing tries to estimate the SQA/ESQA requirements for UCBs and some other I/O related control blocks, and adds this to the initial SQA/ESQA size (the default size defined in IEAIPL04 plus the INITSQA in LOADxx, if specified). UCBs get built before the SQA= parameter in IEASYSxx is processed (since we need the UCBs for devices containing the data sets in the PARMLIB concatenation in order to open the PARMLIB concatenation). Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
IBM Mainframe Discussion List wrote on 06/07/2005 08:43:45 AM: > I tried the D IOS,CONFIG(HSA) command and got a display that did not tell me > how big HSA is, but rather how much of HSA is available for adding more > configuration changes, such as more control units or subchannels > (more commonly > pronounced "devices"). > HSA stands for Hardware System Area, not Hardware Storage Area as I wrote in > my previous post. > The info on how many HSAs there are, how big each one is, and its beginning > address is all contained in the Service Call Control Block (SCCB), mapped by > SYS1.MACLIB(IHASCCB), and pointed to by CVTSCPIN. Service Call is a special > SVC (I think it is 122) in MVS that invokes the Diagnose instruction to read > hardware configuration info from the floppy disk. I learned about it by > perusing some RMF microfiche in 1987. > The SCCB also has info on various processor features that are installed, > such as the Performed Lock Operation (PLO) instruction. > I don't remember any software that displays the SCCB info. TMON/MVS might. > It should be easy to build code to find and display the contents or to find > it in a system dump that includes (E)CSA and (E)SQA. > Since the beginning address of each HSA is a four-byte value (SCCBAHSA), it > appears that all HSAs are allocated from the top down of the 2GB bar. D M=HSA displays any HSA ranges which are described in the SCCB. However, in LPAR mode, the SCCB for a logical partition describes only HSA ranges which are part of a storage increment in that zone. Usually there are none of those, so you will see D M=HSA IEE174I 17.06.09 DISPLAY M 715 HSA STATUS NO HSA IN MAIN STORE In the archives, see also: http://bama.ua.edu/cgi-bin/wa?A2=ind9902&L=ibm-main&P=R70841&I=1 http://bama.ua.edu/cgi-bin/wa?A2=ind9902&L=ibm-main&P=R71439&I=1 Jim Mulder z/OS System Test IBM Corp. Poughkeepsie, NY -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
Try - D IOS,CONFIG(ALL) - OR - D IOS,CONFIG(HSA) It will show you the available space in the HSA. HITACHI DATA SYSTEMS Raymond E. Noal Lab Manager, San Diego Facility Office: (858) 537 - 3268 Cell: (858) 248 - 1172 -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Bill Fairchild Sent: Tuesday, June 07, 2005 3:55 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Additional DASD devices -Original Message- From: Werner Kuehnel <[EMAIL PROTECTED]> To: IBM-MAIN@BAMA.UA.EDU Sent: Tue, 7 Jun 2005 12:15:54 +0200 Subject: Additional DASD devices Can someone tell me please, what storage areas will be used if I add let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? I seem to recall a situation months ago, when we defined our new STK V2XF with the maximum of addresses, the available private region went down by 1 MB. Unfortunately I can't remember what areas caused this. Werner I/O devices, channels, control units, etc., are described by control blocks that are in the part of central storage called the Hardware Storage Area (HSA), which is allocated from the top down. These control blocks are normally accessed and accessible only by the channel subsystem. Most of them are not documented in the Principles of Operations. I don't remember if there is any MVS operator command that can display how large the HSA is. Bill Fairchild -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
It sounds like you told the HCD to allocate the UCB's below the line as opposed to above. Check your specifications for the STK DASD you mention. HITACHI DATA SYSTEMS Raymond E. Noal Lab Manager, San Diego Facility Office: (858) 537 - 3268 Cell: (858) 248 - 1172 -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Werner Kuehnel Sent: Tuesday, June 07, 2005 3:16 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Additional DASD devices Can someone tell me please, what storage areas will be used if I add let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? I seem to recall a situation months ago, when we defined our new STK V2XF with the maximum of addresses, the available private region went down by 1 MB. Unfortunately I can't remember what areas caused this. Werner -- Werner Kuehnel IMD GmbH (Mannheimer Versicherung) Mannheim - Germany -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
... Well, yes, but "once bitten, twice shy". Especially when the Windows weenies are __constantly__ jumping on any type of "problem" in the mainframe arena ... Sometimes, you have no choice. We had some old CICS programmes that didn't know what an address greater than 24-bit. Adding the Shark in would have cost too much below. So, we started with the existing DASD and moved them all above. -teD (The secret to success is sincerity. If you can fake that, you've got it made!) -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
Speaking as one who was bitten by the issue described in II12396, you might want to check your INITSQA parameter if you plan on adding a bunch of new devices to a production system. Jon Well, I did some tests and added 4 CUs with 1024 devices to our test system. The output from D IOS,CONFIG(HSA) was: >>Can someone tell me please, what storage areas will be used if I add >>let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? >>I seem to recall a situation months ago, when we defined our new STK >>V2XF with the maximum of addresses, the available private region went >>down by 1 MB. Unfortunately I can't remember what areas caused this. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
Well, I did some tests and added 4 CUs with 1024 devices to our test system. The output from D IOS,CONFIG(HSA) was: IOS506I 14.28.48 I/O CONFIG DATA 996 HARDWARE SYSTEM AREA AVAILABLE FOR CONFIGURATION CHANGES 41 PHYSICAL CONTROL UNITS 1126 SUBCHANNELS FOR SHARED CHANNEL PATHS 282 SUBCHANNELS FOR UNSHARED CHANNEL PATHS 32 LOGICAL CONTROL UNITS FOR SHARED CHANNEL PATHS 9 LOGICAL CONTROL UNITS FOR UNSHARED CHANNEL PATHS and after activating new IODF: IOS506I 15.03.43 I/O CONFIG DATA 078 HARDWARE SYSTEM AREA AVAILABLE FOR CONFIGURATION CHANGES 37 PHYSICAL CONTROL UNITS 102 SUBCHANNELS FOR SHARED CHANNEL PATHS 282 SUBCHANNELS FOR UNSHARED CHANNEL PATHS 28 LOGICAL CONTROL UNITS FOR SHARED CHANNEL PATHS 9 LOGICAL CONTROL UNITS FOR UNSHARED CHANNEL PATHS physical and logical CUs are reduced by 4, shared subchannels by 1024. The UCBs are in SQA and ESQA, according to the manual 112 bytes below the line, 88 bytes above per UCB: Extended SQA 018E3000 042CDFFF42924K 24% used SQA 00E43000 00FCBFFF 1572K 33% used (519K) and after activating new IODF: Extended SQA 018E3000 042CDFFF42924K 25% used SQA 00E43000 00FCBFFF 1572K 41% used (645K) After defining the 1024 devices with LOCANY=YES and activating the change, SQA usage went down back to 33%, ESQA went up to 26%. Thanks to all who responded, Werner Peter Hunkeler wrote: Can someone tell me please, what storage areas will be used if I add let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? I seem to recall a situation months ago, when we defined our new STK V2XF with the maximum of addresses, the available private region went down by 1 MB. Unfortunately I can't remember what areas caused this. UCBs use E/SQA. They will reside above or below the line according to the device definition in HCD. Peter Hunkeler Senior IT Specialist, IBM zSeries Technical Sales Support, Switzerland -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- Werner Kuehnel IMD GmbH (Mannheimer Versicherung) Mannheim - Germany -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
>E/SQA? I thought they were nucleus resident? Well, "back in the day" >at >least. I wonder because I did not increase the SQA= parameter in >IEASYSnn when I added all the Shark devices. Or is SQA automagically >increased? They were moved to (E)SQA in support if dynamic I/O, I think. If you add devices and do not IPL with CLPA, your available SQA will shrink since PLPA boundary is kept constant. With CLPA, the SQA= parameter from IEASYSxx is honoured and PLPA is moved, if necessary. Peter Hunkeler Senior IT Specialist, IBM zSeries Technical Sales Support, Switzerland -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
Bill Fairchild wrote: I tried the D IOS,CONFIG(HSA) command and got a display that did not tell me how big HSA is, but rather how much of HSA is available for adding more configuration changes, such as more control units or subchannels (more commonly pronounced "devices"). HSA stands for Hardware System Area, not Hardware Storage Area as I wrote in my previous post. The info on how many HSAs there are, how big each one is, and its beginning address is all contained in the Service Call Control Block (SCCB), mapped by SYS1.MACLIB(IHASCCB), and pointed to by CVTSCPIN. Service Call is a special SVC (I think it is 122) in MVS that invokes the Diagnose instruction to read hardware configuration info from the floppy disk. I learned about it by perusing some RMF microfiche in 1987. The SCCB also has info on various processor features that are installed, such as the Performed Lock Operation (PLO) instruction. I don't remember any software that displays the SCCB info. TMON/MVS might. It should be easy to build code to find and display the contents or to find it in a system dump that includes (E)CSA and (E)SQA. Since the beginning address of each HSA is a four-byte value (SCCBAHSA), it appears that all HSAs are allocated from the top down of the 2GB bar. Bill Fairchild -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html Use the HMC to find out the total HSA allocated. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
> -Original Message- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Ted MacNEIL > Sent: Monday, June 06, 2005 7:00 PM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: Additional DASD devices > > > ... > We just got a new Shark. I had to put the UCBs above the > line. I used to > have them below the line due to some OEM products not tolerating them > being above the line > ... > > That would be pretty old releases of ISV software. > > We had UCB's above the line for quite a long time (in my former life). > > > -teD Well, yes, but "once bitten, twice shy". Especially when the Windows weenies are __constantly__ jumping on any type of "problem" in the mainframe arena and lieing about how Windows just doesn't have "those problems". Well, "those problems" is not a lie. Windows has an entirely different set of problems. But they don't count, of course. -- John McKown Senior Systems Programmer UICI Insurance Center Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its' content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
... We just got a new Shark. I had to put the UCBs above the line. I used to have them below the line due to some OEM products not tolerating them being above the line ... That would be pretty old releases of ISV software. We had UCB's above the line for quite a long time (in my former life). -teD (The secret to success is sincerity. If you can fake that, you've got it made!) -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
> -Original Message- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Peter Hunkeler > Sent: Tuesday, June 07, 2005 8:06 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Re: Additional DASD devices > > > > UCBs use E/SQA. They will reside above or below the line according to > the device definition in HCD. > > Peter Hunkeler > Senior IT Specialist, IBM zSeries Technical Sales Support, Switzerland E/SQA? I thought they were nucleus resident? Well, "back in the day" at least. I wonder because I did not increase the SQA= parameter in IEASYSnn when I added all the Shark devices. Or is SQA automagically increased? -- John McKown Senior Systems Programmer UICI Insurance Center Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its' content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
>Can someone tell me please, what storage areas will be used if I add >let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? >I seem to recall a situation months ago, when we defined our new STK >V2XF with the maximum of addresses, the available private region went >down by 1 MB. Unfortunately I can't remember what areas caused this. UCBs use E/SQA. They will reside above or below the line according to the device definition in HCD. Peter Hunkeler Senior IT Specialist, IBM zSeries Technical Sales Support, Switzerland -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
> -Original Message- > From: IBM Mainframe Discussion List > [mailto:[EMAIL PROTECTED] On Behalf Of Werner Kuehnel > Sent: Tuesday, June 07, 2005 5:16 AM > To: IBM-MAIN@BAMA.UA.EDU > Subject: Additional DASD devices > > > Can someone tell me please, what storage areas will be used if I add > let's say 4096 DASD devices (new DASD subsystem) to my HCD > configuration? > I seem to recall a situation months ago, when we defined our new STK > V2XF with the maximum of addresses, the available private region went > down by 1 MB. Unfortunately I can't remember what areas caused this. > > Werner Probably having the UCBs below the line. Note that the size of the HSA has absolutely NOTHING to do with the size of the private region. Oh, I'm assuming you mean the below the line private, not the above the line private. We just got a new Shark. I had to put the UCBs above the line. I used to have them below the line due to some OEM products not tolerating them being above the line. -- John McKown Senior Systems Programmer UICI Insurance Center Information Technology This message (including any attachments) contains confidential information intended for a specific individual and purpose, and its' content is protected by law. If you are not the intended recipient, you should delete this message and are hereby notified that any disclosure, copying, or distribution of this transmission, or taking any action based on it, is strictly prohibited. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
I tried the D IOS,CONFIG(HSA) command and got a display that did not tell me how big HSA is, but rather how much of HSA is available for adding more configuration changes, such as more control units or subchannels (more commonly pronounced "devices"). HSA stands for Hardware System Area, not Hardware Storage Area as I wrote in my previous post. The info on how many HSAs there are, how big each one is, and its beginning address is all contained in the Service Call Control Block (SCCB), mapped by SYS1.MACLIB(IHASCCB), and pointed to by CVTSCPIN. Service Call is a special SVC (I think it is 122) in MVS that invokes the Diagnose instruction to read hardware configuration info from the floppy disk. I learned about it by perusing some RMF microfiche in 1987. The SCCB also has info on various processor features that are installed, such as the Performed Lock Operation (PLO) instruction. I don't remember any software that displays the SCCB info. TMON/MVS might. It should be easy to build code to find and display the contents or to find it in a system dump that includes (E)CSA and (E)SQA. Since the beginning address of each HSA is a four-byte value (SCCBAHSA), it appears that all HSAs are allocated from the top down of the 2GB bar. Bill Fairchild -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
/D IOS,CONFIG(HSA) in SDSF will give you the amount of the hardware system area (HSA) that is available to perform configuration changes. This is an excerpt from the z/OS 1.6 System Commands. > > > > -Original Message- > From: Werner Kuehnel <[EMAIL PROTECTED]> > To: IBM-MAIN@BAMA.UA.EDU > Sent: Tue, 7 Jun 2005 12:15:54 +0200 > Subject: Additional DASD devices > > > Can someone tell me please, what storage areas will be used if I add let's > say 4096 DASD devices (new DASD subsystem) to my HCD configuration? > I seem to recall a situation months ago, when we defined our new STK V2XF > with the maximum of addresses, the available private region went down by 1 > MB. Unfortunately I can't remember what areas caused this. > > Werner > > > > > I/O devices, channels, control units, etc., are described by control > blocks that are in the part of central storage called the Hardware Storage > Area (HSA), which is allocated from the top down. These control blocks > are normally accessed and accessible only by the channel subsystem. Most > of them are not documented in the Principles of Operations. I don't > remember if there is any MVS operator command that can display how large > the HSA is. > > Bill Fairchild > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO > Search the archives at http://bama.ua.edu/archives/ibm-main.html > John Cassidy Dipl-Ing Schleswigstr. 7 51065 Cologne Tel: +41 76 4198 658 EU -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
The command would be: D IOS,CONFIG(HSA) Salah -Original Message- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Bill Fairchild Sent: Tuesday, June 07, 2005 6:55 AM To: IBM-MAIN@BAMA.UA.EDU Subject: Re: Additional DASD devices -Original Message- From: Werner Kuehnel <[EMAIL PROTECTED]> To: IBM-MAIN@BAMA.UA.EDU Sent: Tue, 7 Jun 2005 12:15:54 +0200 Subject: Additional DASD devices Can someone tell me please, what storage areas will be used if I add let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? I seem to recall a situation months ago, when we defined our new STK V2XF with the maximum of addresses, the available private region went down by 1 MB. Unfortunately I can't remember what areas caused this. Werner I/O devices, channels, control units, etc., are described by control blocks that are in the part of central storage called the Hardware Storage Area (HSA), which is allocated from the top down. These control blocks are normally accessed and accessible only by the channel subsystem. Most of them are not documented in the Principles of Operations. I don't remember if there is any MVS operator command that can display how large the HSA is. Bill Fairchild -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Re: Additional DASD devices
-Original Message- From: Werner Kuehnel <[EMAIL PROTECTED]> To: IBM-MAIN@BAMA.UA.EDU Sent: Tue, 7 Jun 2005 12:15:54 +0200 Subject: Additional DASD devices Can someone tell me please, what storage areas will be used if I add let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? I seem to recall a situation months ago, when we defined our new STK V2XF with the maximum of addresses, the available private region went down by 1 MB. Unfortunately I can't remember what areas caused this. Werner I/O devices, channels, control units, etc., are described by control blocks that are in the part of central storage called the Hardware Storage Area (HSA), which is allocated from the top down. These control blocks are normally accessed and accessible only by the channel subsystem. Most of them are not documented in the Principles of Operations. I don't remember if there is any MVS operator command that can display how large the HSA is. Bill Fairchild -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
Additional DASD devices
Can someone tell me please, what storage areas will be used if I add let's say 4096 DASD devices (new DASD subsystem) to my HCD configuration? I seem to recall a situation months ago, when we defined our new STK V2XF with the maximum of addresses, the available private region went down by 1 MB. Unfortunately I can't remember what areas caused this. Werner -- Werner Kuehnel IMD GmbH (Mannheimer Versicherung) Mannheim - Germany -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
