Raid 1 swapping drives

Mark Cartwright
One of my drives is showing increasing bad blocks, so I want to swap it out for a new one. I recently got a OWC Mercury Elite Pro dual bay and the enclosure just died on Most of the RAID setups I have seen, you hot swap the bad drive, go to RAID bios, select "restore array" or "rebuild array", get a cup of coffee and you are done. I thought about hot swapping and allowing the RAID to rebuild, but i don't THINK it works that way going to a different size hard drive. Click Rebuild to another disk. I want Raid 1 mirror and a hot swap caddy like this, the idea being I can take the drive out at the end of the day and take it home from the office, which is at the bottom of the garden, still leaving the computer running if I wish, 'hot swap'. Then ultimately I wanted to test recovering the RAID with another 2 TB and test if the RAID automatically grew from 1 TB to 2 TB. Ch 6 Hardware Support. Raid 0+1 with the loss of a single drive reverts to a Raid0 array. In RAID 1, you can add the old drive provided it has the same connection type as the working drive. Assuming that the kernel did not already read and use a corrupted page from the failing leg. 22 Mar 2010 the two operational partitions still working were the /boot and swap partitions ( the system is running three RAID1 mirrored drives; a total of six  Swapping on a mirrored RAID can help you survive a failing disk. That's because ICH10R treats two RAIDed drives as a single hard drive; it's just easier creating a system image, replacing the damaged drive and then copying the image onto the RAID array. Often it's not really  I have two Samsung drives in a RAID 1, configured in Windows 7 (NOT hardware /BIOS). So its better to back all the data and remove the existing drive, insert the new 4TB drive and follow the below steps to recreate new raid 1 array then restore the data. While you and I are certainly power-users enough to replace drives and  24 Nov 2013 RAID 1: This mode writes and reads the same data to pairs of drives than five minutes to replace the drive (while the RAID was on) and it  21 Apr 2013 "No server downtime when you need to replace the RAID drives" Contents Logical volume status when the RAID operates normally When a  22 Oct 2015 You can configure RAID 1 across as many disks as you want, You will want to RAID1 your swap file as well because if a disk fails and swap  A year or so ago 1 of the drives in the set died, but my system remained stable because of the RAID, then over the last few months I seem to be  24 Oct 2019 RAID 1 mirrors data across all disks in its array, meaning each block of On the new page, name your partition SWAP and select the Use as:  9 Dec 2015 In traditional mdadm based RAID if you have two 1 TB disks The correct thing to do when a disk in an RAID array fails, is to replace it. most raid software that interacts with the controller will allow you to spin down the failed drive (and a hot-swap BIOS setting). I thus. Re: Procedure for hot swapping a drive on a HP ProLiant ML350 G5 with RAID 5 Whenever the harddisk is continiously burning amber (it is FAILED), then you can pull out the disk without problem and put a new one in (with the same Spare Part Number). I lost one disk from the Raid 1 and on the Raid 5 set I have one dead drive plus a failing drive. Turn on the  11 Nov 2011 It is my understanding that the D-Link NAS RAID 1 operates the primary drive and This says to me that yes you could swap in and out 3 or 4 or more drives for  In computer storage, the standard RAID levels comprise a basic set of RAID configurations that employ the techniques of striping, mirroring, or parity to create large reliable data stores from multiple general-purpose computer hard disk drives (HDDs). I can think of one: With raid-1 and hot-swappable drives you can change a failed leg of the swap-mirror without rebooting. Upgrading isn't going to smooth. All RAID levels – except for RAID 0 – mitigate the risk of downtime and data loss from a failed hard drive on a dedicated server. 0, Firewire 400, Firewire 800 Interfaces and RAID 0/1 0G01652: Electronics Raid 10 is always referred to as raid 10 never as 1+0. Once you insert the drive the RAID will resume, if you end up installing another drive the RAID will rebuild which will take a few hours. If you did a cold swap, power on the system at this point. 2- Physically replace the failing disk. 1) usually server hardware should even allow hot swap of a failed drive 2) depends on ”how much dead” drive is, but typically you can determine the properties of the remaining drive in the array. 6cm Japan Made Silent RAID 1 combines two hard drives into one hard drive; the secondary drive is used as a  16 May 2016 1) What are the differences between storage drives and hot-swap bays you've configured into a RAID 1 array (learn more about RAID here). Follow the prompts to create a new RAID 1 volume. STUDY. This went fine. I will, probably, be putting in two SSDs (Raided) for my data drive, and was wondering if it made sense to Raid (1) the OS drive, which in this case will be the M2 drives. I'm about to order a new puter, having it custom built, Windows 7, i5, 8 gig ram, all signing and all dancing. Click All Programs. Everything worked fine till a week ago, then the Intel Application Accelerator, Rad Edition (IAARE) started telling me that the drive on port #0 is no missing and that the integrity of the Raid volume is now "degraded". The first RAID 1 drive in each drive group then duplicates its data to the second   Swap in the new drive and wait for it to rebuild the RAID array by mirroring the data on Drive 1. Hari RAID 1 offers redundancy through mirroring, i. 23 May 2019 I want to replace one of its RAID 1 drives with an identically spec'd HDD but this replacement HDD was previously used and is formatted for  [NT2 U31C] How to replace a faulty drive in a RAID 1 set? When a drive fails, the corresponding LED lights up red. ( also known as mirrored mode or RAID 1) and the capacity is divided in half. And, a RAID solution can improve your I/O performance with significant improvements to read and write speeds.   While it’s rebuilding, you’ll see the green drive LED flashing. SWAP on RAID 1 can be expected to perform better than a single swap partition outside the RAID, but not as well as two swaps set to the same priority. Hard drives that can be used for hot-swapping cost significantly less than regular hard drives. Group 2 is a copy of this. 5" SAS Hard Drive compatible with any SAS Raid Controller G-Technology 64TB G-SPEED Shuttle XL Thunderbolt 3 Storage Solution – Transportable, hardware RAID, 8-Bay – 0G05859 Good news – America's nuke arsenal to swap eight-inch floppy disks for solid-state drives The drives had been among the units slated for replacement as part of a "modernization" effort. If only one drive is defective and the RAID  14 May 2018 It's never fun when a hard drive dies, but Synology at least makes it the RAID type as part of the repair (e. The most common types are RAID 0 (striping), RAID 1 (mirroring) and its . Suggestions brought t Almost embarrassed to ask this but I seemed to be having a senior moment or something. RAID1 rebuild procedure for Intel Matrix Storage Manager Document number GD-2012-0022-A Date: March 9, 2012 Written by: Torleif Ringsaker, Tordivel AS Distribution: Public 1 Introduction RAID1 is a drive mirroring functionality handled at the drive controller level in a computer. Ideally with RAID 1, RAID 5, etc once can easily do a hot HDD swap as they support mirroring at the hardware level but to do the same on a software raid 1 becomes tricky as ideally an OS shutdown is needed to avoid any application impact during the HDD swap. replacing a SATA drive in a Raid 0 Unlike Raid 1 where you pop a new drive in, you can try but it's never a sure thing to clone that drive to the new one and boot up. Both drives have less than 100GB of free space, therefore a new drive. The POS app has issues. How to replace new HDD and repaire Volume 1 Degraded in Synology DS416. RAID 1 is therefor setup that if either of the drives fail; the second (hopefully working drive) is then used as the primary, until the failling drive is replaced; where by the controller writes all the good info (ie 2nd drive) to the new unformatted or 'other' drive (drive 3 or perhaps if you fixed drive 1 say with SpinRite you could use that). Solution: Just swapping drives does not make RAID grow in most cases. I built a RAID 1 mirror across 2 disks (a 2TB and 1TB). From my experiences, swapping out a failing drive is a snap. No data is lost in this case. Today I bought a 4TB drive and I want to swap that one with the 1TB. Flashcards. e. Just make sure you don't pull out the second drive until the rebuild of the first one is done. The read/write speed and latency between the HDD and SSD are probably considerable and as such I'd rebuild the mirror on the new SSD and then swap out the HDD for another SSD and rebuild the mirror A RAID 1 configuration provides only data protection by copying data from one drive to another. IMO If you're going to maintain a RAID 1 Array, then the drives should be of the same type and size (and make and model) when reasonably possible. ALso Its nto possible to mirror the standalone drive in the new Raid 1 array, only you can create raid 1 with two new empty drives in the pegasus unit . I let the drive spin up for 5-10 seconds before connecting the SATA signal cable. RAID 1 - How to use if one drive fails 13 posts jehoff. The steps I have taken are: 1. CineRAID CR-H458 Hardware RAID 0, 1, 10, 3 and RAID 5, Support 4 x 3. Click Start. RAID 10. raid- level 1 nr-raid-disks 2 persistent-superblock 1 chunk-size 4  30 Nov 2015 A RAID setup can be faster than a single disk, and provide drive failure stripes data across disks for speed without any redundancy, and RAID 1, There I saw that, in fact, the hot spare had been swapped into the array, and  RAID 0 mode provides disk striping across all drives in the RAID drive group. So they mirror each other. At the end you would have aray1 with 4 x 2 TB and array2 with 2 x 2 TB (or 2 x JBOB each 2 TB). Can I create two LVMs with 2 drives each, totaling 4 drives, then set up RAID 1? The goal is to create two each 8 TB LVMs, then mirror them. The replacement can be because of a device failure or, for storage devices, to substitute other data. Ubuntu RAID 1 – Step 15a ext4 and swap changes. 0 eSATA RAID SubSystem. If the upgrade tanks, swap drives and rebuild from the previous "baseline" drive. RAID 5 requires 1/#disks worth of space per RAID array. Then I wanted to try "simulating" an HDD failure by removing the 1 TB drive. It is a function of the controller, not of RAID, but few do that. Once this is completed for both the / and swap device you can see the pairs listed as RAID device #0 and #1 below. 23 Apr 2018 Check whether your server supports hot plug - this is the easiest method: pull out the failed HDD, plug in the new one. From the operating system, one drive is visible. a RAID-1 device, the  5 Feb 2007 In a RAID 1 or RAID 5 configuration you'll be able to recover from . I currently have a HPE ML110 G9 server with a 4GB p440 controller and the integrated b140i controller,  What are the steps I need to perform the replace the degraded hard drive in RAID 1 settings? Do I just shut down the server, remove bad hard drive, place new  25 Sep 2017 1 - Can someone confirm that the drive are hot swapable. It seems like my options come down to raid 1 with hot swap disks (internal or external) 1 swapped out for a backup, raid 0+1 and a USB attached hard drive rotated daily (probably use an rsync mechanism for backup), raid 0+1 and a tape backup, or possibly a network attached storage device that provides the raid 1 with hot swap disks for backup. , data is written identically to two drives. The article said RAID 1 copies all data to every drive in the array at the same time, essentially creating a clone of the primary drive in real time. hot swap: A hot swap is the replacement of a hard drive, CD-ROM drive, power supply, or other device with a similar device while the computer system using it remains in operation. If you’re interested in using hot-swapping in a RAID configuration, your best option is to use RAID Level 1 architecture, also know as “disk mirroring. Quote; Hello, i`m using RAID 1 with 2 X 3TB Disks Hot-swapping the hard drives when the RAID crashes. POS system that we are currently using is setup as raid 1. This is my C drive. This way, we have a backup copy, and still have the two original drives intact. Backup to this external drive on a schedule and then store it off-site. With built-in hardware RAID, the dock offers 4 drive set-up options: JBOD (non-RAID) to keep the drives as independent volumes; RAID 1 (mirror) for backup reliability; RAID 0 (stripe) for optimal Get the best deals on SAS 2 900GB Internal Hard Disk Drives with Hot Swap when you IBM 900GB 10k 6G 2. one drive has an orange light so it's end of life or bad and I'm going to replace it. Select the replacement hard drive and click Rebuild. ” With RAID 1, all of the server data is Ch 6 Hardware Support. I have a RAID 1 setup with two 500GB drives. 1 lists the RAID 1 virtual drive as "Non-SSD". Destiny 2 Divinity Exotic Weapon Guide: How To Earn Shadowkeep's Raid Trace Rifle Get Shadowkeep's Exotic trace rifle by starting with these steps, then heading into the Garden of Salvation raid. What type of RAID is This RAID calculator computes array characteristics given the disk capacity, the number of disks, and the array type. Okay I did a new build based on a X58 Classy 760 and encountered the RAID dropout problems described on several threads here. Mount the new drive and connect SATA power. Without hot plug, you  Replace disks in a RAID 1. Even though the RAID is still operational, it’s best practice to replace the hard drive before any data gets corrupted due to the bad sectors. Your data will then be migrated from the single large hard drive to the new RAID 1 volume. Re: Upgrading Hard drive in DL360 Raid 1 It should be possible to swap the hard drives out with bigger ones one at a time. Click Intel® Rapid Storage Technology. While RAID 1 uses two drives, RAID 10 involves at least four drives and combines the mirroring of RAID 1 with the striping of RAID 0. 2 - Will the RAID 1 rebuild it self after added the new drive or do I need to schedule  This guide shows how to remove a failed hard drive from a Linux RAID1 i have a Raid 1 by software, same cfg that you, the md0 its the swap partition and the  Steps to move a RAID 1 volume to larger drives without having to reinstall the operating system or lose Replace it with one of the large hard drives. To take advantage of the software RAID feature on the PIP platform CPU boards, MPL created the HSRAID-1/2 options. Swap only 1 of the disks out while the other one remains and let the array re-build. Writing to a RAID 1 is sometimes slower than writing to a single disk, since all data must be written to both disks. What type of RAID is This is possibly a dumb question but here goes: I have two SATA drives set up in a RAID 1 mirror using Intel's ICH8R/9R/10R raid controller. Drive: SATA OS Supported: Windows 7 / Windows Vista / XP Home Edition SP-1, Professional SP-1 / Windows 2000 Professional SP-3 / Windows ME / Windows 98SE or later versions Mac OS X 10. Most hardware raids in a raid 1 mirrored configuration will not care what's on the drive, meaning that they would replicate whatever is on one disk as 1's and 0's to the other disk directly, it makes no difference if you have Bitlocker on or off - if that's the case with your raid controller all you need to do is: replace drive one 1) Install two drives and configure in a RAID 1 array. However, if disks with different speeds are used in a RAID 1 array, overall  I have a Pegasus R4 with 2 pairs of 3TB drives each in a RAID 1 mirror configuration. Hari I'm running two SSDs in RAID 1 on an LSI 9260-8i adapter and ESXi 5. Turn off the system and attach the second large hard drive. Five Guys Burgers and Fries will fill about 2,700 square feet that Starbucks occupies at 7017 Forest Hill Ave. I actually have three drives, but I want to rotate them around from time to time and keep one shelved to act as a backup. In this example, SCSI1 and SCSI2 are the physical Samsung 830 256GB drives. Disk mirroring is a good choice for applications that require high performance and high availability, such as transactional applications, email and operating systems. RAID 10 involves at least four drives, and creates a RAID 0 stripe set involving two There are, in fact, backup solutions that use one permanent drive and multiple hard drives in cartridges, and “swap out” one of the two drives on a two-drive RAID1 array — daily, weekly, however much data you can afford to loose when it fails. RAID 10 is a combination of RAID 0 and RAID 1 and consists of stripes across mirrored drives. However, as this is not a RAID setup so it’s not as simple as switching the drives and waiting for drive A to mirror the data to the new drive. Figure 1-9 RAID 00 Drive Group Example Using Two Drives . 5" Hot Swappable Drive Bays USB 3. Just working on planning out the media for my next build which will be using the Maximus IX board. Also, RAID1 array is only as big as the lowest capacity drive. Hi, The RAID1 on my IBM x3400 is currently 73GB (2 x 73GB SAS 15k Hot-Swap drives). This new solution is a user friendly and easy option to build a hot swap capable RAID system inside the PIP housing - perfect for a RAID1 array. Also yes you will only be able to do it one drive at a time or if you want you can turn the NAS off and just pull the drives out and do the scan and then pop them back in and turn the NAS on. Login the NAS and check the disk volume configuration in “Volume ; Management”. Eliminating most of the hardware RAID controller components and relocating advanced RAID algorithms from a hardware-based controller into device driver software lowers the total solution cost, while still maintaining comparable RAID protection and full compatibility with RAID 1 and RAID 10 are both mirroring technologies that use half of their available drives for data, but the main difference between them is the number of available drives. When the array has been rebuilt on the other disk then put the other larger disk in and that will rebuild against the first larger disk that you put in. I know that if I take one of them out and put in a new 500GB drive it will set it up so that the new drive will mirror the ol RAID 1 is therefor setup that if either of the drives fail; the second (hopefully working drive) is then used as the primary, until the failling drive is replaced; where by the controller writes all the good info (ie 2nd drive) to the new unformatted or 'other' drive (drive 3 or perhaps if you fixed drive 1 say with SpinRite you could use that). . Here I've two  For years two spinning disks in a RAID 1 mirror configuration has been the go In a perfect world, when a drive fails in a RAID 1 array you simply swap out the  Support Disk Hot-Swap and Auto-Rebuild. After determining which hard drive went kaput, you can remove it from the NAS enclosure. 14 Aug 2002 Using a RAID-1 device for a swap partition can help prevent that crash. hard drive when a member drive fails in a RAID configuration. That I know, yet I don’t know how to do this in my situation. Use the third drive in an external enclosure. The incident was caused by a malfunction Ubuntu RAID 1 – Step 15 repeat for swap. RAID 0 offers no redundancy and instead uses striping, i. Remove the second drive. If you set up a system to boot on eg. In the comments on the article someone suggested using that two drives in RAID 1 will automatically create a backup, eliminating the need to back up the hard drive in the usual way. Yank a drive in Raid 1, do an upgrade (software) test and make sure it's stable and put the drive back in to rebuild the mirror. I have the 2 drives with the OS mirrored with the raid controller (not WIndows). However, in group 1 (consisting of drive 1 and drive 2) drive 1 reads letters a and b and drive 2 reads c and d. Skip navigation NAS Hard Drive Upgrade (Swap Yes, you can swap drive in My Book Duo but RAID rebuild operation could take several hours to complete as per the storage size. Supported RAID levels are RAID 0, RAID 1, RAID1E, RAID 10 (1+0), RAID 5/50/5E/5EE, RAID 6/60. in the Publix- and Target Bitcoin experienced a major 'flash crash' on derivatives exchange Deribit last night, with price sliding all the way down to $7,750 in a matter of seconds. Raid 10 can sustain a TWO disk failures if its one drive in each mirror set that fails. As you know RAID 1 means mirroring. I have two SATA drives set up in a RAID 1 mirror using Intel's ICH8R/9R/10R raid controller. 3 or later (recommended 10. I know I can instruct ESXi to recognize it as an SSD, but should I? What are the advantages and disadvantages of tagging the drive as an SSD? I've heard that tagging it as an SSD will enable the ability to swap to "host cache". RAID 0+1 – Only available on arrays with four or more drives, this combines mirroring and striping for the increased performance of RAID 0 with the redundancy of a RAID 1. Turn on the system and boot into Windows. Follow the steps below to hot-swap the . The NAS supports hot-swapping the hard drives when 1 member drive crashes in RAID 1, 1–2 member drives crash in RAID 5 or RAID 6. Drives in RAID 1 When the RAID is rebuilt, your data is copied to the new drive. Backed up the functional hard drive. Yes in all models supporting hot-swap (not TS-110/112/210/212) the idea with the fault tolerant RAID-configurations (RAID 1, 5, 6 and 10), is to be able to replace failing disks without powering the NAS down and that the RAID-volume should automatically rebuild without interrupting the server services. Smack-Fu Master, in training I mean, they talk about hot-swapping drives and running replacement drives live, and that wouldn't be any Swap on RAID 1 May Perform Better. I received an alert from my Synology RAID regarding a few bad sectors on a hard drive. At any rate, I definitely want to image the drive before doing anything. Start is 2 x 2 TB in RAID 1 Adding 2 x 4 TB, migrate to RAID 5 Result is an array of 4 x 2 TB in RAID 5. In Figure A, this would mean that, if all 12 disks were in a single RAID 5 set, you'd be left with 11 disks worth of capacity. g. Raid 01 also reads a,b,c and d in 2 seconds. After trying some of the fixes I have decided to swap out the 2 1TB WD Black drives which I suspect don't support TLER with 2 1TB WD Black RE3 drives that WD recomended. There’s no getting around that fact. In that case, you can leave it powered on and remove and insert hard drives all day long without an issue. With the RAID 1 swap partition setup, we are ready to go. 9 or later) Linux 32-bit / 64-bit Follow these steps to rebuild a RAID volume after replacing a failed hard drive from a redundant RAID volume (RAID 1, 5, 10): Turn on the system. RAID 10 involves at least four drives, and creates a RAID 0 stripe set involving two If one of the drives fails, an identical copy of the data remains on the surviving drive. then you just put a new drive in and it should start rebuilding automatically, depending on your setup of course. We recently have had a drive go bad on our AIX server that is in a RAID 10 array. I was wondering | The UNIX and Linux Forums Amazon. The main difference are that in raid 10 drives 1 and 3 could both fail and the system would still run because drives 2 and 4 would take over. RAID Levels: RAID 0,RAID1,RAID 10,RAID 5,RAID 6(Complete Tutorial) Submitted by Sarath Pillai on Fri, 03/15/2013 - 19:08 Hard Disk drives are one of the most complex devices that are attached to a computer system(or a server machine). What Is RAID, Anyway? Before we get right into the actual nuts and bolts of finding or setting up a RAID solution, it’s critical that we break down exactly what RAID technology is to begin with. Regards. When booting the machine, it should say press Ctrl +M or Ctrl + A (Iforget) to enter the SCSI manager. On a schedule, remove one drive from the array, store it off-site, and join the third drive to the array. To remove the failing disk use the Disk Management tool to break the mirror: 1- Select (right-click) the failing disk and remove it from the mirror. RAID 1 involves only two drives that are mirrored to provide resilience in the event of a single disk failure. By using hot swap hard drives the faulty hard drive can be removed and replaced in a live server WITHOUT the need to power down the server and replace the failed drive. com: G-Technology G-RAID mini 1TB Dual External Hard Drive w/ eSATA, USB 2. The read/write speed and latency between the HDD and SSD are probably considerable and as such I'd rebuild the mirror on the new SSD and then swap out the HDD for another SSD and rebuild the mirror I'm about to order a new puter, having it custom built, Windows 7, i5, 8 gig ram, all signing and all dancing. I have an HP ML350 G6 with a raid controller. Open the Intel Rapid Storage Technology user interface and click the Create icon.   When it stops then the drive is ready. This means RAID 0 offers no fault tolerance; if any of the constituent drives fails, the RAID unit fails. RAID is a term that stands for Redundant Array of Inexpensive (or Independent) Disks. In my case, the new drive was conveniently named /dev/sdb, the same as the old one. with a raid10 type array, preventing against multiple disks failing. RAID 10 breaks up data into smaller blocks and mirrors the blocks of data to each RAID 1 drive group. RAID 1 - Disk Replace - TS-251. , data is split across all the drives. Click Intel. My question is, if I want to do a rotation does the drive I'm swapping in have to be formatted and empty? That mainly depends on whether or not you have a “real” hardware raid controller of a “fake” one that depends largely on the software driver. Because it makes a full duplicate of the data, the RAID 1 requires twice as much storage capacity as required by the original data. Data is fully protected as the mirror copy is available if the originating drive is disabled or unavailable. 2) Install two drives and configure in a RAID 1 array. You are confused between Raid 10 and Raid 0+1. Once the failed hard drive is replaced by the new hard drive the RAID array detects the new drive and copies data over to it and once it is fully configured it adds it to the RAID. We have a replacement on the way. Using any other hard drive or capacity voids the warranty for your My Book Duo device. RAID 1 and RAID 10 are both mirroring technologies that use half of their available drives for data, but the main difference between them is the number of available drives. Identify the new drive and what device name it has. I've read the following post and several others all ove What is RAID 5? Hard drives on dedicated servers eventually fail. Hello good afternoon. In March 2004 I purchased a new Dimension XPS system that featured a Raid 1 configuration consisting of two 120GB Maxtor Hard Drives. switching from RAID 1 to RAID 5 if  I am helping a friend who wants to replace a failing drive in a RAID 1 Array. A national burger joint soon will be stuffing itself into a Southside shopping center, taking over for a coffee shop chain that is moving across the street. This Dynamic volume is not the boot drive, but it does  18 Oct 2018 Here I'm explaining the detailed steps in replacing a bad drive from software RAID 1 array. However, this is not recommended as RAID ideally uses identical drives. Sorry if this has been asked, I couldn't find using search: I have a TS-219P with 2 x 1TB drives in a RAID 1 (mirror). Hi there, I'm thinking about getting a 2 bay hard drive enclosure that is hot swappable that I can do a Raid 1 with. 3. I will replace the Raid 1 first, once thats re-built I will replace the dead disk in the Raid 5 set, there after the failing one in the Raid 5 set. I've just bought 2 x 146GB SAS 15k Hot-Swap drives and want to know the best way to replace the 73GB drives with the 146GB drives. You may have to completely shut down your NAS first before removing a hard drive, but most Synology NAS boxes support hot-swapping. disk mirroring (RAID 1): Disk mirroring, also known as RAID 1, is the replication of data to two or more disks. If the other drive fails before your new drive is installed, all data on the array will be lost. Note: RAID configurations require both drives to be the same capacity and same model. I also have a Dell 720 Power edge, I have 2 logical disks, one is a Raid 1 and the other is a Raid 5. HPE Dynamic Smart Array is a RAID solution combining a storage host bus adapter (HBA) and proprietary software components. Please note that RAID-1 is a disk redundancy solution meant for mission critical servers and workstations and that it is a poor backup solution. For example, when there are four drives, the first two will have data striped across them, and the second two will be a mirror of the first two. I am new to the AIX operating system and am seeking out some advice. As I wrote above, you could create another array RAID 1 to make use of your capacity of twice 2 TB on the bigger drives. Raid 10 is a mirror of stripes not “stripe of mirrors” Raid 0+1 is a stripe of mirrors. HSRAID-1/2 Hot Swap capable RAID Expansion. raid 1 swapping drives

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