From d2a6864a3b329bff3525b486394cd1870a9cf5a7 Mon Sep 17 00:00:00 2001 From: "Ethan N. Paul" Date: Sat, 31 Aug 2019 17:08:27 -0400 Subject: [PATCH] Add notes about storage redundancy --- docs/roadmap/redundancy.md | 31 ++++++++++++++++++++++++++++++- 1 file changed, 30 insertions(+), 1 deletion(-) diff --git a/docs/roadmap/redundancy.md b/docs/roadmap/redundancy.md index 5d10746..2ad3714 100644 --- a/docs/roadmap/redundancy.md +++ b/docs/roadmap/redundancy.md @@ -17,4 +17,33 @@ data corruption ### Current State -All primary data is stored +All primary data is stored on a single 8TB drive array in hardware RAID 5. The +array is comprised of four Western Digital Red NAS drives, each with a 3TB +capacity. The array is fault tolerant, but not redundant. Secondary data is +stored in one of three places: the primary array, a secondary drive array, or +the 256GB boot drive of a single server. + +The secondary array is 470GB aggregate, comprised of four HST Travelstar 10K +SAS drives, also in hardware RAID 5. The boot drive of the server is a consumer +grade SSD. None of these systems are backed up or redundant. + +Primary data includes personal data including books, projects, documents, +documentation, photos, etc. Secondary data is application configuration +information and deployed hosting systems. + +In addition to the primary and secondary data, there is the tertiary data of +a media collection (movies, TV, etc). Tertiary data is stored on the primary +drive array, only because there is nowhere else with enough capacity to store +it. + +### Desired State + +Data should be more efficiently segregated by priority tier. The two drive +arrays should be split up into two arrays each: a pair of 3TB arrays using the +WD Red's and a pair of 146GB array's using the Travelstars. Each pair of arrays +should be installed into the two [Dell R410's](../hardware/poweredge-r410.md). +Secondary data exists on the 146GB arrays on each server and is routinely +backed up to the 3TB arrays on the same server. + +Primary data should be cloned on both of the 3TB arrays. Primary data should +be backed up externally to a third server.