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Questions tagged [sas]

Serial Attached SCSI (SAS) is a computer bus used to move data to and from computer storage devices such as hard drives and tape drives. SAS depends on a point-to-point serial protocol that replaces the parallel SCSI bus technology that first appeared in the mid 1980s in data centers and workstations, and it uses the standard SCSI command set.

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replace controller, add second controller, or use expander?

I have a Proliant DL380 G6 that I am re-purposing as a Hyper-V host for a new, off-site data center that will host our DR services. The server currently has a P410i controller with the 512MB BBWC module. The drives installed are SFF 6G 10K drives. I…
longneck
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ML350 G5 - upgrade hot swap drives to 6 Gb/s?

I support a non profit. They got an ML350 G5 donated to them and I immediately put it to good use for them :) It came with four HP 300GB 15K SAS drives - and of course, they have all now failed. I have been replacing the drives and they are all…
EricEE
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HP D2700 enclosure and SSDs. Will any SSD work?

I've got an HP D2700 enclosure that I'm looking to shove some 2.5" SSD drives in. Looking at the prices of HP's SSD drives vs something like an Intel 710 and even something less 'enterprisey', there's quite a difference in price. I know the HP…
growse
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LSI 9285-8e and Supermicro SC837E26-RJBOD1 duplicate enclosure ID and slot numbers

I am working with 2 x Supermicro SC837E26-RJBOD1 chassis connected to a single LSI 9285-8e card in a Supermicro 1U host. There are 28 drives in each chassis for a total of 56 drives in 28 RAID1 mirrors. The problem I am running in to is that there…
Andy Shinn
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Will any SAS drive work in a Dell PowerEdge server?

If I bought a Dell 2950 or 2650, for example, and it has no drives in it (from say an auction). Will any SAS drive I get work in it? I ask because they vary so much in price. Some drives are $150 some are $500. I know they are faster more space,…
johnny
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HP ProLiant DL380 G7 LFF - Is every SAS HDD compatible?

I am just starting to get into server hardware, so please bear with me. I bought a HP ProLiant DL380 Generation 7 with a LFF drive cage and I do not know which SAS drives are actually compatible. Does every SAS drive work? In particular i found…
Sandrogo
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Performance differences between 2.5" vs. 3.5" SAS

What real performance gains/losses are there on 2.5" vs. 3.5" 15k SAS drives. Are folks really seeing seek differences, &c?
Jé Queue
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How to connect two Dell storage arrays to a to a Dell Poweredge server (daisy chain vs direct)?

I purchased two Dell MD1000 storage arrays together with a Dell Poweredge 1950 server and need help setting them up (I am a complete novice to SAN/iSCSI). The Poweredge server has two SAS SFF-8470 connectors. Should the two storage arrays (which…
Greg
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ProLiant DL380p not recognising HP hard drives on boot

I have two ProLiant DL380p rack mounted small factor servers. I have installed the following drives onto both servers: 1x 240GB SSD drive (Crucial NOT HP branded) 2.5" SATA 7.2k rpm 1TB (HP-branded) MM1000GBKAL 2.5" SAS 10k rpm 600GB (HP-branded)…
tommed
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Mixing dual and single port SAS disks

I have a HP DL380 G5 with 8x146GB single port SAS SSF disks (DG146ABAB4). A couple of them have failed and I can't find any new single port disks anymore. They all seem to be dual port. I'm wondering if I can mix the two disk types? Are dual port…
Garry Harthill
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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. What I'm having trouble finding information on…
Eric C. Singer
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SAS Expanders for DIY JBOD Arrays

I am researching making a DIY SAS array much like the Dell MD1000. My understanding is that these devices do not contain a RAID controller, instead they present all the drives on in SAS domain to the host. I would like to build the same type of…
Jacob Groundwater
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Are 6Gb/s SAS drives compatible with 3Gb/s SAS interfaces?

Are SAS 3Gb/s controllers (SAS1) forward compatible with newer SAS2 drives specified at 6Gb/s? The controller I have in mind is an LSI SAS1064. I know that SAS2 controllers are backwards compatible with SAS devices. I found some information in this…
Ryan
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What are SAS external storage options (Promise, Infortrend, SuperMircro, ...)?

We are looking for a ~32T external storage solution for two 48-core AMD servers. These will be used for a small Linux OpenVZ cloud for CPU intensive web-servers and data warehousing. Dual path with automatic fail-over is pretty much a must.…
Aleksandr Levchuk
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Recovering data from a failed SAS drive? (RAID0...yes, I know)

We have a HP DL360 server with a P400 controller, which has two 72GB 10K SAS drives in a RAID 0 configuration (yes, I know...RAID 0). The HP Model number for the drives is DG072A8B54 Recently, one of the two drives appear to have failed, and is no…
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