Questions tagged [direct-attached-storage]
The direct-attached-storage tag has no usage guidance.
46
questions
0
votes
1
answer
32
views
Multiple MD1200s, Multiple External Connections Increase Throughput?
I am looking at a setup with two Dell MD1200s loaded with 6Gbs SATA drives.
What I am trying to figure out is if a single card with two external inputs would be a bottleneck, or if it would be better ...
- 101
0
votes
1
answer
2k
views
HP Proliant Servers doesn't boot OS ("boot logical drive is configured but is missing or offline" error)
I purchased a refurbished HP Proliant Server DL560 Gen8 in order to create my own home lab.
The most painful step was to get an Operating System properly working, doesn't matter what was the OS. I ...
- 121
1
vote
0
answers
106
views
Disk Array Presents Ghost Drives to OS Given Proper SAS?
I've recently acquired a disk array that has the strange property of not appearing properly to the operating system (Linux).
The drives in it are 300G each, but appear to the OS as 256K instead (using ...
- 113
1
vote
1
answer
149
views
Windows Shared Storage / External SAS3 / JBOD
I have two Windows 2016 servers which are directly connected to an external JBOD (with non-RAID cards). Most of the drives are raw and are being used in an Oracle Cluster. There are a few drives ...
- 113
0
votes
0
answers
287
views
Can someone help interpreting high latency / low throughput on a ESXi host (Direct-attached storage)
as a disclaimer - I am not a storage guy, so ELI5 ;) I am looking at a ESXi with direct-attached storage (SAS SSDs and HDDs in a RAID1, different datastores). System X shown on the graphics is on the ...
- 1
2
votes
1
answer
801
views
Figuring out how storage is configured to Hyper-V cluster
I am presented with a Windows Server 2016 Hyper-V cluster (2 nodes) and the nodes are connected to an HP MSA 2040 storage (SAN?) with direct fiber connection.
I am trying to figure out how the ...
- 119
1
vote
0
answers
70
views
How do you decouple storage and compute resources without losing the benefits of locally attached storage?
Services like DynamoDB (not specifically, but it was the first that came to mind) provide dynamic scaling on write/read capacity (i.e. compute) as well as storage capacity.
This means that you can ...
- 111
3
votes
2
answers
319
views
High Availability on DAS HPE
Anyone who can assist me?
I currently have a DL360 Gen9 HPE server Directly attached to HPE MSA 2040 device (DAS). I now need to ensure HA on the server level, is it possible to have FO cluster (...
- 31
0
votes
0
answers
184
views
slow write speed to Direct Connect storage
Heres my situation. I am running an IBM X3550 m4 with dual e5-2670 and 80 gigs of ram. I have a ds4243 netapp appliances with 3gbps controllers and 24 x 2tb enterprise drives connect via qsfp to sas ...
0
votes
1
answer
1k
views
DAS RAID Storage to FreeNAS
I have a RAIDdeluxe storage from RDL family with 42 HDDs inside that is connected to the Seupermicro server with FreeNAS installed on it.
FreeNAS server has MegaRAID SAS 9380-8e card.
I've read ...
- 161
8
votes
1
answer
6k
views
How to install ZFS on Dell Poweredge server and Dell disk array without using the RAID controller
How to set up ZFS using a Dell Poweredge and disk arrays (DAS).
I am completely new to this and have the following questions:
Does the RAID card need to be configured? (e.g. virtual device)
Do I ...
- 321
5
votes
2
answers
449
views
What are the options for attaching DAS units greatly exceeding 62TB Virutal Disks max size limit on vSphere 6.0/6.5?
Our new DAS unit is on the horizon and I'm looking for the best way to configure the storage.
We currently use vSphere 6.0 but will have to upgrade to 6.5 when Update 1 is released as all HDDs in ...
- 211
0
votes
1
answer
438
views
Best approach for redundant storage DAS/SAN
We've always used DAS storage (which as per Dell standards) have multiple controllers for redundancy, multiple PSUs etc. However, in the event of full hardware failure (which may or may not be likely) ...
- 1,684
3
votes
2
answers
813
views
SAS expander card, not detecting DAS, is this supposed to work?
I have a similar sas expander HSTNM-B017 and when I connect an external DAS unit to it (HP StorageWorkd MSA50) nothing shows up in device manager or disk manager, as if its not connected.
do you have ...
- 119
0
votes
2
answers
515
views
Is it possible to have a directly attached SHARED Storage (accessed at block level) other than SAN or NAS?
We need storage specifically for HPC Lustre failover setup, where it is must that two servers should share same block level storage to have failover configuration.
With very limited knowledge on ...
- 681
2
votes
2
answers
885
views
How does does a Dell MD12XX DAS appliance show up on a server
I have a Dell PowerEdge Server with a HW RAID controller and a 12Gbs HBA SAS Storage adapter. I'm are looking to add more storage for backup/archiving purposes. I'm looking at using the MD1200 or ...
- 21
2
votes
1
answer
790
views
Are Dell PowerVault MD3200 EMMs compatible with the MD1200 chassis/midplane?
I have a Dell MD1200 chassis with PSUs, and I have yet to buy the EMM units. I was wondering if I could buy the MD3200 EMMs and have it function as an MD3200 or if I have to buy the MD1200 EMMs. I ...
- 23
1
vote
1
answer
3k
views
Dual R710/MD3400 SAS Connectivity
We've recently purchased 2 x Dell R710s and 2 x Dell MD3400 SAS storage devices with 12 2tb drives in each with 2 dual SAS connections from each server to 2 dual raid controllers on both MD3400s (I've ...
- 81
1
vote
2
answers
2k
views
Spreading RAIDs across multiple DAS enclosures
This is really a question of best practice.
In a datacentre environment whereby we have a single MD3200 DAS, and for the sake of the question, 6 expansion cages (MD1200s) how would you configure the ...
- 1,684
0
votes
1
answer
1k
views
Azure Maximum attached disk size, and billing
Some context: I want to setup an ES cluster on Azure. Data nodes should be w/ 10 shards/replicas of 1 To each, which means 10To "data" disk on each node. Nodes run on linux.
Questions:
AFAIK I can ...
- 133
0
votes
0
answers
322
views
esxi host remote driver update?
We have a Power Edge R410 Server which is running on VmWare ESXi. Recently my boss has been making an update from 5 to 5.1 and the datastore has been gone. We try to recover and seems like the problem ...
- 357
1
vote
0
answers
75
views
Transfer cacerts file to another das
I was wondering if its possible to transfer the cacerts.jks file to another glassfish DAS machine? The idea is to synchronize both das machines without having to import every certificate manually.
...
- 35
-2
votes
1
answer
70
views
Something new for me in Windows server 2008
what does Direct Attached Storage DAS mean in windows server 2008.
what does it do or can it be useful for a user using a server
any ideas?
-2
votes
1
answer
413
views
How to setup Load Balancing on DAS (Dell MD3220)
We have a Dell MD3220 attached through two 6Gb/s HBA controllers. We want to enable Load Balancing to improve performance. What at the requirements and steps?
2
votes
1
answer
1k
views
VMWare Setup with 2 Servers and a DAS (DELL MD3220)
I am planning to use a VMWare based setup consisting of two VMWare servers (2 CPU, 256GB Memory) and a DAS (DELL MD3220 with 24x900GB disks). The virtual machines will be half running MS SQL databases ...
- 225
0
votes
1
answer
6k
views
HP P2000 G3 MSA (SAS) - Configuring 2 Hosts to use the same volume (cluster)
I have got 2 x HP DL360 G7 servers with the sc08 controller cards installed, and dual controller P2000 G3, the cabling is a single cable from each server to the controlelr cards (using SAS port 1 on ...
1
vote
1
answer
1k
views
How many RAIDs per RAID controller
I am going to build a SQL server and I need to have four independent RAID 10s. I am looking at different RAID controllers to choose from. For instance I am looking at LSI 9260-8I but I cannot figure ...
- 123
4
votes
2
answers
4k
views
DAS vs SAN storage for serving 2 to 4 nodes
We currently have 4 Linux nodes with local storage, arranged in two active/passive pairs with storage mirrored using DRBD, running virtual machines (actually using Xen Hypervisor) for typical hosting ...
- 5,826
6
votes
3
answers
4k
views
Dell MD1000 and an x4 SAS connector throughput / layout
I'm trying to get my head around how a multi lane x4 SAS connector works in a DAS system such as the Dell MD1000. I understand that each lane is 3Gbps, and that multiple hard drives can share a lane. ...
- 2,329
1
vote
2
answers
2k
views
How does Direct Attached Storage (DAS) work?
I am about to order a server including a DAS with 12 HDDs. However, since I haven't used such a device before I am not sure if I understood its functionality correctly.
If I connect such a device to ...
- 165
3
votes
1
answer
2k
views
VMware with the HP MSA70
I would like to build a new smallish VMware cluster - only two nodes will ever be used.
I have previously seen references to shared direct attached storage. That would dramatically push down the ...
- 15.6k
2
votes
3
answers
352
views
Best way to attach 96 tb to workstation
I'm running a workstation with dual xeon 5690's (12 physical/24 logical cores), 192 gb of ram (ie, maxed-out), Windows 7 64bit, 5 slots for adapter cards, and 1 tb of internal storage, with 5 more ...
- 197
1
vote
1
answer
647
views
Good SAN sequential I/O throughput
We have an EMC San - CX4-240C filled with 15k (4Gb) Fibre Channel disks setup in RAID 5. Our applications that run on this SAN do primarily Sequential read and write of large text data files. I'm ...
- 53
1
vote
5
answers
297
views
Upgrading old SAN, expected performance increase?
I am working with a postgresql database that sits on really old Hardware.
1 Sun Sunfire V60x with a single 3.0ghx Xeon FSB 400 512kb cache with 6gb of RAM running RHEL 4 (32bit)
The table space and ...
- 11
0
votes
1
answer
246
views
Advice on MSA70 Storage and MSA2324fc
I am looking into storage for our network, due to budgets am looking at both DAS and SAN solutions but I don't have any experience with HP storage solutions so just got a few questions.
On the ...
- 3
3
votes
4
answers
957
views
Can I keep the data on my Raid 1 drives if I move them to a new Raid controller?
I have a couple of servers I'm about to decommission and they each have 2 raid 1 drives. I want to take these drives and put them in a DAS but I am told that I will lose the data because the raid ...
- 31
1
vote
0
answers
230
views
DroboS causes Windows Server 2008 box to hang on boot
I'm running a DroboS connected via eSATA and the machine will not boot past the initial Windows graphic loading screen no matter how long I let it run.
Windows Server 2008 x86
connected via an ...
- 202
3
votes
1
answer
591
views
Software to repliacte data in a Cluster Shared Volume in real time from DAS attached to Server 2k8 R2 HyperV cluster to an identical setup?
Are there any software solutions that will be able to handle replicating the data from one SAS based DAS (a Dell MD3200) attached to two R410 servers running clustered Server 2008 R2 Hyper V instances ...
- 3,771
2
votes
2
answers
6k
views
What is Best storage servers infrastructure ? DAS/NAS/SAN or installing GlusterFS/LUSTER/HDFS/RBDB
I am trying to design an infrastucture for the project I am working on. It would be somehow a file-sharing/downloading project (like rapidshare) and I would need high storage sizes and good scability, ...
TORr0t
8
votes
4
answers
3k
views
What Makes Cloud Storage (Amazon AWS, Microsoft Azure, google Apps) different from Traditional Data center storage networking (SAN and NAS)?
Some confusion because of my question so to make it simple :
"What kind of storage do big cloud providers use and why?"
As far as i understand, however I am not able to find any kind of official ...
- 431
1
vote
1
answer
127
views
Can I have my storage server running in a VM?
I'm trying to find a way to minimize the amount of space the VM server and storage take up while being able to use ZFS as a file system.
I've come up with either using xVM on Solaris or using ...
- 321
-3
votes
1
answer
75
views
Driver not visible from the OS in DAS
While doing the OS scanning the driver is not visible, causing me to be unable to make a backup (which is offline).
The server is directly attached to the SCSI tape library (DAS environment). What ...
- 179
0
votes
2
answers
506
views
1 Storage with 1 "big" partition + 2 servers
I need to setup an "cold fail over" to our database server.
Since we cannot run an real HA because an software issue, I'm planning to connect 2 server to a single storage. If main server fails, I just ...
- 473
0
votes
2
answers
2k
views
Are there any direct attached NAS devices?
This may seem a bit counter-intuitive, but I'm looking for a NAS device like the QNAP that can be direct attached to a server. The rationale here would be backup speed. I would like to backup via ...
- 4,988
1
vote
2
answers
915
views
Share SCSI DAS enclosure (vtrak m210p) between multiple servers?
I've got a Promise vTrak m210p subsystem. It supports LUN mapping & masking, and has two SCSI channels (2 VHDCI ins & 2 outs on rear of device). I believe this question will probably apply ...
- 4,988
77
votes
5
answers
158k
views
What is the difference between SAN, NAS and DAS?
What is the difference between SAN, NAS and DAS?
sevugarajan