HPE MSA - DISCERNING STORAGE ALLOCATION
10/01/21 - storage,msa,san,kb
On the main/home screen, right in the middle is a bar which shows overall system Capacity. The top bar is your Logical capacity, and your bottom bar is the Physical capacity.
Simply put, your Physical capacity related directly to how many and what type of drives you have physically installed. If you put all of the disks in a single pool (pools can have multiple groups), then it'll be one single spot for all of your data. If you were doing a performance/archive (gold/silver) setup, you would not have a single disk pool.
Continue Reading -->REPAIRING WITH MDADM
09/01/2021 - mdadm,linux,kb,storage
When adding a new – or replacing an old – drive, sometimes you need to verify what the dev is inside of Linux.
# lsblk
Will give you a breakdown of how each block device is used (or, not). In the example to the right, you can see that /dev/sdg is empty. Before we go about adding it, let’s double-check our array
Continue Reading -->HOW DATA STORAGE MANAGEMENT HAS CHANGED IN 2020
12/26/20 - storage
The pandemic of COVID-19 has caused IT teams to change their resolution of data storage management. Their feedback to the disruption, groups have moved ‘en masse’ to the cloud, migrated storage operations and have deployed virtual desktop environments in response to the situation.
But it is not the same for all storage administrators and engineers, as those dealing with enterprise environments and large masses of end users working from home are putting in a lot of work and effort to migrate to the cloud, many smaller businesses are likely making do with their current setup and perhaps just utilizing a dial-in VPN solution to access onsite resources.
Despite this, the majority of administrators have changed their practices to meet changing requirements for data storage management. Let us look at a few different tendencies that have resulted, and what that may spell out after the pandemic is over.
Continue Reading -->SSDs on RAID
12/12/20 - storage,kb
RAID arrays have been the foundation of storage systems since the 90’s, ranging from Small businesses to Enterprise environments. Originating from Berkeley in the 80’s, the concept of a RAID allowed to create storage redundancy and striping across multiple disks to allow storage from a single pool, instead of organizing between multiple separate volumes. Often times, creating an array with multiple inexpensive disks will outperform a single, larger disk in a large number of factors.
Not always expressly mentioned, another benefit of an array is an increase of read (and sometimes, write) speeds. Couple this with a larger single volume, and redundancy to protect against physical disk failure, and a RAID is an easy decision.
Continue Reading -->DFSR AUTHORITATIVE RESTORE
11/24/19 - activedirectory,windows,dfsr,kb,storage
Steps should be ran from the Autoritative DC (generally the PDC Emulator role), unless otherwise noted.
You can verify which server has the PDC Emulator role by running from an elevated command prompt: