Nope. I meant what I said. 300 MB/s. It is what it is. First Horizon Bank Mainframe Technical Support
-----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Allan Staller Sent: Monday, July 6, 2020 12:42 PM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Storage & tape question [External Email. Exercise caution when clicking links or opening attachments.] ITYM TB, not MB -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Jackson, Rob Sent: Monday, July 6, 2020 9:58 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Storage & tape question [CAUTION: This Email is from outside the Organization. Unless you trust the sender, Don’t click links or open attachments as it may be a Phishing email, which can steal your Information and compromise your Computer.] We have a three-way TS7760 grid--all mirrors of each other. DR box is a TS7760T with a 3584, with some 650 tapes, or so. Yes, it's very much different. With IBM's VTSs you pay for bandwidth. We license 300 MB/s, for instance, on each cluster. If I remember correctly, you can go up to 700 MB/s on the TS7760. A far cry from normal "DASD" boxes. First Horizon Bank Mainframe Technical Support -----Original Message----- From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of kekronbekron Sent: Monday, July 6, 2020 10:47 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: Storage & tape question [External Email. Exercise caution when clicking links or opening attachments.] Hmm... do a lot of shops use actual cart based tapes ... TS77xx with TS4x00? Don't know if EMC DLm has a cart back-end option. If it's VTL with disk back-end, is that any different from having it all on DASD? - KB ‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐ On Monday, July 6, 2020 4:25 PM, R.S. <r.skoru...@bremultibank.com.pl> wrote: > I forgot something obvious for me: NEVER USE TAPES FOR APPLICATION DATA. > No jobs should write or read tapes. > Nothing except backup and restore and (optionally) ML2. Managed by HSM > or FDR. Some excepions for archive copies are worth to consider. > Note: you may have 15 years old backup on new shining tape. Migration > from older tape is no nightmare at all. It is simple. > > ---------------------------------------------------------------------- > ---------------------------------------------------------------------- > ---------------------------------------------------------------------- > ---------------------------------------------------------------------- > ---------------------------------------------------------------------- > ------------------- > > Radoslaw Skorupka > Lodz, Poland > > W dniu 06.07.2020 o 12:49, R.S. pisze: > > > W dniu 05.07.2020 o 14:12, kekronbekron pisze: > > > > > Hello List, > > > Just wondering ... assuming there's a primary storage product out > > > there that can store how-many-ever hoo-haa-bytes, and is a good > > > product in general, it should make sense to begin eliminating all > > > tape (3490/3590) use right? > > > First, ML1 & ML2 in HSM, then HSM itself, then rebuild jobs to > > > write to disk, or do SMS/ACS updates to make it all disk reads/writes. > > > Looking at the current storage solutions out there, this is > > > possible, right? > > > What would be the drawbacks (assume that primary storage is super > > > cost-efficient, so there's no need to archive anything). > > > > Few remarks: > > Even the cheapest possible DASD will not replace backup and other > > things (archive copy, etc.) I did replace 3490E tapes with really > > cheap second hand DASD boxes, it was approx. 20 years ago. Been > > There, done that. It wasn't very fine solution, it was cheap and > > working. AFAIR HSM does not like DASD as the output for some > > activities, can't remember details. > > Someone wrote about tapes moved to DR shelter. That's very > > old-fashioned. I would strongly prefer to have remote copy, that > > means two dasd-boxes and connectivity between. > > There are products for tape emulation on CKD disk. It is definitely > > no cheap. It also consume MSU. > > Tapes, even virtual tapes are OFFLINE media from MVS point of view. > > Offline media are good for some oooops! mistakes. > > Last, but not least: you assumption is far from reality. DASD is > > still more expensive than tape. The more capacity the difference is bigger. > > Tape (real one) is cheap when talking about carts and very well > > scalable. However tape realm with "first cart" is extremely > > expensive, because drives are expensive, controllers are expensive > > and ATLs are expensive. > > The real decision depends strongly on your capacity, your predicted > > growths, your needs and budget. > > == > > Jeśli nie jesteś adresatem tej wiadomości: > > - powiadom nas o tym w mailu zwrotnym (dziękujemy!), > - usuń trwale tę wiadomość (i wszystkie kopie, które wydrukowałeś lub > zapisałeś na dysku). > Wiadomość ta może zawierać chronione prawem informacje, które może > wykorzystać tylko adresat.Przypominamy, że każdy, kto rozpowszechnia > (kopiuje, rozprowadza) tę wiadomość lub podejmuje podobne działania, narusza > prawo i może podlegać karze. > > mBank S.A. z siedzibą w Warszawie, ul. 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