FICON and CTC
Hi all, I would like to ask if it is possible to use one FICON cable for both disk access and CTC. Of course it would be connected to SAN director (Inrange) with FICON support. I checked FICON Implementation redbook and they say " Unlike the ESCON channel CTC communication, which uses a pair of ESCON CTC-CNC channels, the FICON (FC mode) channel CTC communication does not require a pair of channels because it can communicate with any FICON (FC mode) channel that has a corresponding FCTC control unit defined. This means that FICON CTC communications can be provided using only a single FICON (FC mode) channel per processor. " If I understand it right, instead of two ESCON cable I can use one FICON and define it as FC in HCD. And then define both disk and CTC control units on them. Anybody could comment ? Anybody using it ? Any "no go" suggestions ? Thank you Marian Gasparovic -- 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: FICON and CTC
As usual, when I ask question I find answer shortly after :) This is from the same redbook The FICON channel at each end of the FICON CTC connection, supporting the FCTC control units, can also communicate with other FICON native control units, such as disk and tape. So chpid is type FC and then there are CU of FCTC and 3990. I like to answer myself :) Marian On 7/20/05, Marian Gasparovic <[EMAIL PROTECTED]> wrote: > Hi all, > I would like to ask if it is possible to use one FICON cable for both > disk access and CTC. Of course it would be connected to SAN director > (Inrange) with FICON support. > I checked FICON Implementation redbook and they say > " > Unlike the ESCON channel CTC communication, which uses a pair of ESCON CTC-CNC > channels, the FICON (FC mode) channel CTC communication does not > require a pair of > channels because it can communicate with any FICON (FC mode) channel that has > a > corresponding FCTC control unit defined. This means that FICON CTC > communications can > be provided using only a single FICON (FC mode) channel per processor. > " > If I understand it right, instead of two ESCON cable I can use one > FICON and define it as FC in HCD. And then define both disk and CTC > control units on them. > Anybody could comment ? Anybody using it ? Any "no go" suggestions ? > > Thank you > > Marian Gasparovic > -- 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: FICON and CTC
Marian Gasparovic wrote: As usual, when I ask question I find answer shortly after :) This is from the same redbook The FICON channel at each end of the FICON CTC connection, supporting the FCTC control units, can also communicate with other FICON native control units, such as disk and tape. So chpid is type FC and then there are CU of FCTC and 3990. I like to answer myself :) My $0.02: The requirement for CTC is to connect FC chpid to switch. So for ESCON CTC you need at least two chpids, but you don't need switch, for FICON CTC you need only one chpid, but you also need switch. -- Radoslaw Skorupka Lodz, Poland -- 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: FICON and CTC
From: "R.S." > > My $0.02: > The requirement for CTC is to connect FC chpid to switch. > So for ESCON CTC you need at least two chpids, but you don't need switch, > for FICON CTC you need only one chpid, but you also need switch. I recently had cause to wonder why we don't have the option of "slushware" CTCs on the current/latest kit. We can do it for peer mode coupling links,even hiperSockets but not CTCs - for them we have to waste real FICON glass. C'mon IBM - if you need to placate the marketing droids call 'em hiperCTCs for all I care, just give us the option. ... more whistling in the wind I guess. Shane ... -- 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
