Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [jbod]

26 questions
13
votes
1 answer

RAID 6 array, one disk rebuilding?

I have got a 10 disk (16 TB) RAID-6 array (AVAGO MegaRAID SAS 9380-8e) in a Supermicro JBOD enclosure. The controller started beeping today and one disk is blinking red/blue. I entered the AVAGO control software and 9 of the disks are shown as…
gha
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8
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2 answers

Storage server - Swapping SAS HBA card for a different model

TL;DR Server's original SAS HBA (PCIe card) does not support transparent passthrough, which is desired, as I want the OS to manage the disks (ZFS). At my company, we have an Intel SSR212MC2 server (spec sheet) with SRCSAS144E RAID controller. The…
Nubarke
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8
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4 answers

Optimal RAID 6+0 Setup for 40+ 4TB Disks

I am setting up a JBOD containing 44 4TB 7200 RPM SAS HDs. I chose RAID 60 as I prefer drive failure protection over the performance improvements offered by RAID 10. My issue is how to choose the optimal disks per span that would results in a…
Vince
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6
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1 answer

Does enabling JBOD mode on LSI based controllers affect existing logical disks/arrays?

I've got an LSI2208 integrated raid controller on a Supermicro X9DRH server board. It currently has a Logical Drive (LD) composed of 4 spinning disks. Now I want to add some more drives in JBOD, to let the OS access them directly (as opposed to…
Phil Regnauld
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5
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2 answers

How to make RAID controller rescan devices

I have the following setup: A single server with two LSI MegaRAID SAS 9380-8e controllers which are both connected to two 60-bay disk shelves while roughly following the design by Edmund White (see https://github.com/ewwhite/zfs-ha/wiki). The goal…
Michael
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3
votes
3 answers

ZFS on top of a bunch of Raid0 (1 disk) volumes with battery backed write-cache

I'm reinstalling a workstation (not a headless server) with an Intel RAID card with BBU and 4GB internal cache. My current setup uses ZFS on a pair of mechanical disks and a partition on an SSD for the ZIL. I want to keep using ZFS on 2 bigger…
julianjm
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1
vote
0 answers

Mount both sides of ZFS mirror to different mountpoints (AKA Glusterfs is choking)

We have two SuperStorage Server 6049PE1CR36L each with 24 - 4TB disks. At the moment we are running Ubuntu 18.04 but this is negotiable if it helps solve our problem. We are using Ext4 as the OS filesystem, and OpenZFS for the data. We have an HBA,…
BurningKrome
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1
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0 answers

max out bandwidth of old 3Gb/s SAS JBOD

I just acquired a JBOD which was made in 2011, it has 60 2TB 7.2k SATA disks but using SATA-to-SAS adapters on each disk. There are two IO modules on the enclosure, each module offer 4 SFF-8088 ports, the speed of these SAS port is 3Gb/s. It was…
R.Chu
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1
vote
1 answer

Can SAS Expander's OUT port be used as IN?

Assuming there is only one HBA and no failover intended. The card is an HP 468405-001 or 487738-001 with 6x Mini-SAS OUT and 2x IN internal. Its 1x external connector is dubbed 'HPE Tape.' If I connected my HBA (which resides at a separate box)…
Ashot Shahbazian
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1
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2 answers

Accidental SAS cable removal

We accidentally removed a SAS cable from an active AVAGO MegaRAID controller during a troubleshooting session. After we reconnected the SAS cable, all disks in the RAID6 disk array are reported as Frn-Bad and the virtual drive is gone. We could now…
Zeta
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1
vote
1 answer

JBOD (spanned volume) on top of RAID 0 in Windows Server

I currently have a Windows Server 2008 R2 setup with a RAID 0 drive (2x2TB SSD) which is getting out of space. I want to increase de available space adding more drives (probably another 2x2TB SSD) but I also need to keep the new setup under the same…
Super Rey
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1
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1 answer

Exchange 2016 Preferred Architecture JBOD Definition

In the Exchange 2016 preferred architecture recommendations put out by Microsoft. The recommendation is for JBOD storage for information stores. I understand the basis of the recommendation and the semantics of recovery etc. but I am trying to get…
ausip
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1
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0 answers

controller doesn't see disks on a external JBOD chassis

I have an LSI SAS9300-4i4e controller, plugged into a SuperServer 6018U-TRTP+ server and connected with mini-sasHD cable to a Supermicro SC216BE1C-R741JBOD chassis, which has several Toshiba SSD disks installed. The controller doesn't see any disks…
drookie
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1
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0 answers

Invalid SAS topology

I have a 44-bay Supermicro JBOD which is connected to a MegaRAID 9280-8e. Upon boot, all drives show activity and the device scan reaches 100%. Then however, an eror message states: Invalid SAS topology, please check your cabling, fix and…
Michael
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1
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0 answers

With an LSI SAS 12G controller in JBOD personality, what exactly is behavior mode (JBOD vs. None)?

I am currently trying to configure an LSI SAS 12G HBA with the 3108 chip (it is a 9361-8i, but I am nearly sure that my question relates to similar HBAs as well). I have understood the differences between the JBOD and the RAID personalities, but…
Binarus
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