Concurrent SRDF could be used in a couple of scenarios such as setting up a temporary replication to another array in order to migrate large amount of data, or a permanent solution as part of DR strategy. Below are the steps that should generally be followed in order to set up the replication for a […]
Tag Archives: emc
Unix – Useful commands and scenarios
Crontab syntax * * * * * Command/file/script to be executed (5 numerical values followed by command) – – – – – | | | | | | | | | \/ | | | \/ Day of the week (0-6 – Sunday = 0) | | \/ Month (1-12) | \/ Day of the month (1-31) \/ Hour (0-23) […]
EMC – Notes for day to day operation
DISCLAIMER:Information mentioned below as been compiled from various sources such as first hand experience by myself and my colleagues, from webpages searched via google etc. I do not take credit for the tips mentioned below. If a linux host using QLogic card is seeing 18 paths per disk instead of 2, chances are you might […]
EMC – SRDF Theory
EMC SRDF (Symmetrix Remote Data Facility) is a replication product which can be used to replicate the data from one array to second array. Primary use is for business continuity/disaster recovery. Other use is migrating the data from one array to another. This post contains brief explanation of terms associated with SRDF, its operational use, […]
EMC – Setting up SNAPS (snapshots) on VMAX
Application is using tdevs from thin pool on VMAX. Everything is running fine, and the business is happy. Because everyone is happy, the business grows, and so does the data. Now the backups are taking for ever. Suggestion put forward is to use snapshots of tdevs and back them up. Stop the application, take the […]
EMC – VLUN Migration
Your one pool is more occupied than the other pools and you want to migrate a few tdevs around. Or you want to retier the tdevs from FC to SATA pool or vice versa. Whatever is the reason, activity involves migrating tdevs and associated data from one pool to another. This is achieved by VLUN […]
EMC – SYMCLI
If I get a dollar for each time I searched for a sym command to achieve something, I would have been a one tenth of a millionaire by now 🙂 Below is the cheat sheet I compiled to prevent me from becoming that one tenth of a millionaire. ===================================================================================== SYMMASKDB ========= Initialize the VCMDB (a […]