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Questions tagged [direct-attached-storage]

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1answer
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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 ...
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0answers
31 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 ...
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2answers
141 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 (...
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0answers
85 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
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1answer
547 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 ...
6
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1answer
2k 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 ...
6
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2answers
269 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 ...
0
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1answer
156 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) ...
2
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2answers
358 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 ...
0
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2answers
207 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 ...
2
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2answers
492 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 ...
2
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1answer
419 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 ...
1
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1answer
2k 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 ...
1
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2answers
876 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 ...
0
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1answer
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 ...
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0answers
305 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 ...
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0answers
55 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. ...
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1answer
66 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?
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1answer
385 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
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1answer
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 ...
0
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1answer
5k 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
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1answer
628 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 ...
4
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2answers
3k 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 ...
6
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3answers
3k 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. ...
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2answers
1k 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 ...
3
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1answer
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 ...
2
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3answers
336 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 ...
1
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1answer
571 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 ...
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5answers
281 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 ...
0
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1answer
242 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 ...
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4answers
631 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 ...
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0answers
226 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 ...
2
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1answer
563 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 ...
2
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2answers
5k 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, ...
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4answers
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 ...
1
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1answer
112 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 ...
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1answer
73 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 ...
0
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2answers
493 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 ...
0
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2answers
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 ...
1
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2answers
798 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 ...
65
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5answers
133k views

What is the difference between SAN, NAS and DAS?

What is the difference between SAN, NAS and DAS?