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. Senatorska 18, 00-950 > Warszawa,https://apc01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mbank.pl%2F&data=02%7C01%7Callan.staller%40HCL.COM%7Ce487782757204320a6c208d821bcfacf%7C189de737c93a4f5a8b686f4ca9941912%7C0%7C0%7C637296442853757281&sdata=bxiu7H1PrynRKNm7rg5wEbQLnwZjGtetI909Wc5%2F9bI%3D&reserved=0, > e-mail: kont...@mbank.pl. Sąd Rejonowy dla m. st. Warszawy XII Wydział > Gospodarczy Krajowego Rejestru Sądowego, KRS 0000025237, NIP: 526-021-50-88. > Kapitał zakładowy (opłacony w całości) według stanu na 01.01.2020 r. wynosi > 169.401.468 złotych. > > If you are not the addressee of this message: > > - let us know by replying to this e-mail (thank you!), > - delete this message permanently (including all the copies which you have > printed out or saved). > This message may contain legally protected information, which may be used > exclusively by the addressee.Please be reminded that anyone who disseminates > (copies, distributes) this message or takes any similar action, violates the > law and may be penalised. > > mBank S.A. with its registered office in Warsaw, ul. Senatorska 18, > 00-950 > Warszawa,https://apc01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.mbank.pl%2F&data=02%7C01%7Callan.staller%40HCL.COM%7Ce487782757204320a6c208d821bcfacf%7C189de737c93a4f5a8b686f4ca9941912%7C0%7C0%7C637296442853757281&sdata=bxiu7H1PrynRKNm7rg5wEbQLnwZjGtetI909Wc5%2F9bI%3D&reserved=0, > e-mail: kont...@mbank.pl. District Court for the Capital City of Warsaw, > 12th Commercial Division of the National Court Register, KRS 0000025237, NIP: > 526-021-50-88. Fully paid-up share capital amounting to PLN 169.401.468 as at > 1 January 2020. > > > For IBM-MAIN subscribe / signoff / archive access instructions, send > email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Confidentiality notice: This e-mail message, including any attachments, may contain legally privileged and/or confidential information. If you are not the intended recipient(s), or the employee or agent responsible for delivery of this message to the intended recipient(s), you are hereby notified that any dissemination, distribution, or copying of this e-mail message is strictly prohibited. If you have received this message in error, please immediately notify the sender and delete this e-mail message from your computer. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ::DISCLAIMER:: ________________________________ The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. E-mail transmission is not guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or may contain viruses in transmission. The e mail and its contents (with or without referred errors) shall therefore not attach any liability on the originator or HCL or its affiliates. Views or opinions, if any, presented in this email are solely those of the author and may not necessarily reflect the views or opinions of HCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of authorized representative of HCL is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. Before opening any email and/or attachments, please check them for viruses and other defects. ________________________________ ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN