Category: Data Storage

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Data Storage

EMC Unity Host Group, Finally Came!

EMC Unity array was released in 2016 to replace VNX and VNXe family with another mid-range array solution. EMC Unity came with lots of new features and enhancements compare to older families but there was an absent feature that VNX offering. Host access method was changed and each LUN should have been present to each host separately. More than 4 years from GA release, we were waiting for changing host access method because presenting LUN to each host was horrible in large scale environment with many hosts and LUNs. Biggest Change In EMC Unity OE 5.1.0.0.5.394 Previous versions have “Consistency Group” with some limits to present a LUN or more than one LUN to group of hosts. EMC Unity OE 5.1.0.0.5.394 including new feature that the new feature is like VNX Storage Group. The new feature called “Host Group“. You could assign or present multiple LUN to multiple hosts in OE version 5.0 and later but Host Group is the feature that we want. In Dell EMC Unity OE version 5.1 users can logically group hosts and block resources within a host group. Host groups can be created and managed from the Host Groups tab and help to streamline host/resource...

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Data Center / Data Storage / Virtualization

Unity XT Metro Node (1st/2nd Generation): Protect Your Data and Applications from Disaster

Unity XT storage arrays are designed for performance, optimized for efficiency and built to work in multi-cloud environment. Actually Unity XT storage array is mid-range storage array family but this family is capable for enterprise workloads. Enterprise businesses needs protection and needs business continuity solutions. Typically, mid-range storage array has no native business continuity solution but Unity XT offers Unity XT Metro Node as business continuity solution.

EMC Unity 3

Data Center / Data Storage / News

Dell EMC Unity OE 5.0.2.0.5.009

EMC has released new upgrade file for Unity family (5.0.2.0.5.009) but I couldn’t find Release Notes link till now. Seems, the upgrade file is contains some minor fixes and security fixes as well. (Now I know that some issues were major!) The file size is as big as previous releases, but as I know, the below security issues have been fixed on this release. (Thanks to “derWolle“, I don’t know him but he has read the post and sent me the link of release notes: https://support.emc.com/docu97010_Dell-EMC-Unity-Family-5.0.2.0.5.009-Release-Notes.pdf?language=en_US Seems, there is new feature and important fixes: Initially Configuring your Unity syste: When initially configuring your system, you will need to reset the default password whether you are using the Unisphere UI, REST API, SMI-S, Service Commands, or CLI. Support for new Power Supply Unit (PSU): Unity Operating Environment 5.0.2.0.5.009 contains updated firmware to support the new PSU part number 071-000-208-XX. The below security issues have been addressed and 21 technical issue which opened from previous releases have been fixed: bzip2 CVE-2016-3189 CVE-2019-12900                curl CVE-2019-5482 glib2 CVE-2019-13012 libgcrypt CVE-2019-13627 Mozilla-nss, libfreebl3, libsoftokn3   CVE-2019-9811 CVE-2019-11709 CVE-2019-11711 CVE-2019-11712 CVE-2019-11713 CVE-2019-11715 CVE-2019-11717 CVE-2019-11719 CVE-2019-11729 CVE-2019-11730 perl CVE-2018-18311 polkit CVE-2019-6133 python CVE-2018-20852 CVE-2019-9636 CVE-2019-10160  Further Reading...

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Data Center / Data Storage / Operating System / Reviews

Linux Deduplication and Compression: The Ultimate Guide to Saving Space

Cost of storage is the biggest piece of IT budget in any company (Of course not EMC, HPE or other like them 😀 ) and the storage spaces is eating by databases, other data files and backup files as well. Lot of those data file not be used once generated!. I have serious issue with these types of data and especially log files that one of dark data types. I can’t stop generating those data and the related teams are always crying about free space on their servers. They want just Linux servers (Seems, they don’t know Windows has NFS services as well), because they are using shared space on application servers to storing log files and others via NFS. I have offered other solutions such as using Windows as NFS server and use deduplication on Windows Servers, this feature is really good. I have used Windows deduplication on our backup proxy servers and result was incredible. Anyway, they want to Linux server (Not even other Unix-Like!), so I started to googling these: Don’t panic, most Linux’s modern file systems have no native deduplication and transparent compression and must be enabled with third-party software. Let’s see what is deduplication and...